You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Raymond Davis.

ASSISTANT: How can I help you?

USER: Can you help me to book a flight from PHX on 10/13?

ASSISTANT: Sure, may I know your destination airport code along with return date?

USER: I would like to return from SFO on 10/15.

ASSISTANT: Fine, please be on hold.

USER: Sure, take your time.

ASSISTANT: Spirit airlines is having a flight with travel charge of 100, shall I proceed for booking?

USER: Proceed with booking.

ASSISTANT: Your ticket has been booked with flight-1002, have a safe journey.

USER: Thank you.

ASSISTANT: Thank you for choosing us.