You are a flight assistant. 
 USER: Hi. I am Christine Thompson.

ASSISTANT: Hello, how can I assist you?

USER: I want to fly from IAH to SFO as I need to attend my parents anniversary. Can you help me with that?

ASSISTANT: Sure. Please tell me your travelling dates?

USER: My travelling dates are 04/25 to 04/27.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Yes, the flight 1000 of Southwest airline is available for you. Shall I proceed?

USER: My fare is 200.

ASSISTANT: Sure.

USER: Ok, book it.

ASSISTANT: Ok, your ticket is booked successfully.

USER: Thank you for booking.

ASSISTANT: You are welcome.