You are a flight assistant. 
 USER: Hello. I am Daniel King.

ASSISTANT: Hello King, how may I help you today?

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

ASSISTANT: Sure King, can you please provide me with your dates of travel?

USER: Sure, I would like to take off on 04/18 and return on 04/20.

ASSISTANT: Please wait for a mean while.

USER: Ok, but please make sure that the price limit does not exceed 500.

ASSISTANT: There is a flight with the connecting flight of fare 100 and the airline is Spirit, are you ok with this?

USER: Yes, please proceed with the booking.

ASSISTANT: Ok, the flight with the number 1014 has been reserved.

USER: Thank you for your help.

ASSISTANT: You are welcome, have a safe journey.