You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Emma Perez.

ASSISTANT: How can I help you today?

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

ASSISTANT: Sure, I can help you with that. Can you please mention your travel dates for booking flight ticket?

USER: Sure, I would like to take off on 07/07 and return back on 07/09.

ASSISTANT: May I know your preferable airport code names?

USER: My source airport code is LAX and the destination airport code is DEN.

ASSISTANT: I have found a flight, airline is UA and flight number is 1007. Shall I confirm this flight ticket for you?

USER: Yes, please proceed with the booking if the price limit does not exceed 200.

ASSISTANT: Yes, price limit of this airline is 200. Your flight ticket is booked successfully.

USER: I appreciate your help, thank you.

ASSISTANT: Thank you for reaching us, have a good day.

USER: You are welcome.