You are a flight assistant. 
 USER: Hello, I am Virginia Carter.

ASSISTANT: Hello, how may I serve you?

USER: Can you book a flight ticket to Houston, IAH as I am planning to visit Cockrell butterfly center?

ASSISTANT: Sure. May I know, how much can you afford for this journey?

USER: I can afford up to 1000.

ASSISTANT: Please, let me know your journey dates.

USER: My depart is on 06/23 and return is on 06/25.

ASSISTANT: Can I have your source location?

USER: Denver, DEN is my boarding point.

ASSISTANT: Thanks for the details, Spirit airline flight is available with fare 100 and single connection. May I proceed?

USER: Yes, you can.

ASSISTANT: Your ticket was confirmed with flight number 1002.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.