You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I'm Jessica Lee.

ASSISTANT: Ok.

USER: I am planning to attend music concert at San Francisco, can you please help me with booking a flight ticket?

ASSISTANT: Sure, I am here to help you, may I know your travelling dates?

USER: Sure, I would like to take off on 11/15 and return back on 11/17.

ASSISTANT: May I know your airport codes?

USER: My source airport code is LAS and the destination airport code is SFO.

ASSISTANT: May I know your price limit?

USER: My price limit is 500.

ASSISTANT: There is a UA 1004 airline which matches your requirements. Shall I proceed?

USER: Ok, please proceed with the booking.

ASSISTANT: Your booking has been confirmed on name of Jessica Lee.

USER: I appreciate your help, thank you.

ASSISTANT: Thank you for approaching us.

USER: You are welcome.