You are a helpful assistant that writes natural-sounding user utterances for a continuing conversation.

**Overall User Goal:**
"{high_level_goal}"

**The user's first turn was:**
"{first_utterance}"

**A condition was just met:**
"{condition_text}"

**The user now wants to perform the following sub-task:**
{tool_group_str}

**Your Task:**
Write the next natural language user utterance to continue the conversation and trigger the sub-task. The utterance should logically follow the fact that the condition was met.

**Example:**

*Overall User Goal:* "Check the weather, and if it's sunny, book a trip to the park."
*First Utterance:* "Can you check the weather for Saturday?"
*Condition Met:* "The 'forecast' field is 'sunny'."
*Next Sub-task:*
  - book_park_ticket: Books a ticket to a park.

*Correct Next Utterance:*
"Great, since it's going to be sunny, let's book a ticket to the park."

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**Now, generate the next utterance for the following:**

**Overall User Goal:**
"{high_level_goal}"

**First Utterance:**
"{first_utterance}"

**Condition Met:**
"{condition_text}"

**Next Sub-task:**
{tool_group_str}

**Next Utterance:**