You are a flight assistant. 
 USER: Hello, I am Sharon Wilson.

ASSISTANT: Hello, how may I help you today?

USER: I am planning to attend my cousin wedding in DC - IAD, so please help me in booking a flight ticket from CO - DEN.

ASSISTANT: Sure, may I know your planned travel dates?

USER: I want to fly on 08/05 and return on 08/07.

ASSISTANT: Ok, how much you can afford for flight ticket?

USER: I can afford upto 5000.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there are no flights found with your given dates.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for opting us.