You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Kathleen Young here. I want to book a flight from IAH to SFO, can you please help me in booking a flight ticket?

ASSISTANT: Sure Young, can I know the travel dates please?

USER: Sure, my travel dates are from 02/25 to 02/27.

ASSISTANT: Ok, wait a moment please.

USER: Ok, take your time.

ASSISTANT: There is a flight in Southwest airline with price 200.

USER: Ok, please proceed with booking.

ASSISTANT: Your ticket has been booked with flight number 1001.

USER: Thank you for your service.

ASSISTANT: Thank you for approaching us.