You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Cynthia Edwards.

ASSISTANT: How may I help you, Cynthia?

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

ASSISTANT: Ok, may I know your journey dates please?

USER: Sure, I would like to take off on 05/02 and return back on 05/04.

ASSISTANT: Please wait for a minute.

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

ASSISTANT: Cynthia, there are no flights available due to heavy bookings.

USER: Ok, no issues. Thank you for checking.

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

USER: You are welcome.