You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. In which way I can aid you at this moment?

USER: Gregory Scott here. I need your help in booking of a flight ticket from CLT to DEN for an important business meeting, can you please help me out with booking of a flight ticket on those locations?

ASSISTANT: Sure, I can aid you in booking flight ticket. Can you please mention your preferable travel dates for booking flight ticket?

USER: Sure, I am planning to move on 05/03 and please book my return ticket on 05/05.

ASSISTANT: Thank you for providing your travel details. I will put the conversation on hold to check the best flights available in your route.

USER: Ok, take your time but try to bring a best flight in my route.

ASSISTANT: Sorry for the inconvenience no flights available in this route as per your requested dates.

USER: Oh! Sad to hear that. Anyway, I will choose another alternative to go there. Thank you for the information.

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

USER: Welcome.