You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Christine Smith here.

ASSISTANT: How can I aid you?

USER: I need to travel from Houston to Orlando to attend a meeting. Can you please help me in booking a flight ticket?

ASSISTANT: Sure, may I know your nearest origin airport code and destination airport code please?

USER: My origin and destination codes are IAH and MCO.

ASSISTANT: May I know your preferable journey dates please?

USER: I want to start my travel on 03/15 and return back on 03/17.

ASSISTANT: Wait a moment please.

USER: Sure, I will wait for your response.

ASSISTANT: Southwest airlines is available in your route with the ticket fare of 100, shall I proceed with the booking?

USER: Ok, please proceed with booking.

ASSISTANT: Your ticket is booked with the flight number 100.

USER: Thank you for helping me in booking.

ASSISTANT: Thank you for reaching us.