You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Ryan Evans here.

ASSISTANT: How can I aid you Ryan today?

USER: Is this flight ticket booking agency?

ASSISTANT: Yes, your at right place.

USER: I want to attend an award function at Denver, so could you please help with booking to there?

ASSISTANT: Sure, I will help you.. Could you please share your travel dates for booking flight ticket?

USER: Thank you, I am planning to go on 06/14 and please book a return ticket on 06/16.

ASSISTANT: May I know your preferable airport code names?

USER: Sure, I want to travel from ORD to DEN.

ASSISTANT: Ok, please wait a moment, I will check flight availability.

USER: Sure, take your time.

ASSISTANT: Sorry for the inconvenience, no flights available as per your requested dates.

USER: Oh! not a problem, I will choose other airlines to go there. Anyways, thank you for the information.

ASSISTANT: Thank you for contacting us, have a good day Ryan Evans.

USER: Welcome.