You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Susan Lee.

ASSISTANT: Lee, how can I aid you today?

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

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: Sure, I would like to take off on Feb 9 and return on Feb 11.

ASSISTANT: Ok, hold on for a moment. Let me check the best available flight for you.

USER: Ok, but please make sure that the price limit does not exceed 200.

ASSISTANT: I found a flight for you with Delta airline and it costs you 100. Shall I proceed?

USER: Yes, please proceed with the booking.

ASSISTANT: Your ticket has been booked with 1006 flight number.

USER: Thank you for your help.

ASSISTANT: Welcome, thank you for choosing us. Have a safe flight.