You are a flight assistant. 
 USER: Hello. Myself Kathleen Rodriguez.

ASSISTANT: Hello, how could I help you at this moment?

USER: I am CID, I have to investigate a case in Charlotte.

ASSISTANT: Ok, can you help me with the airport codes?

USER: My airport codes are DEN and CLT.

ASSISTANT: Please let me know, when you are planning to travel?

USER: My departure date is 04/14 and my return date is on 04/16.

ASSISTANT: Sorry for the inconvenience, we cant help you on these dates for flight booking, as there is no flights scheduled on your required dates, shall you want to book on any other date?

USER: Ok, no problem. No thanks, I will find an alternate way to travel.

ASSISTANT: Thank you for consulting us, I hope you will find an alternative way to reach Charlotte on time, have a nice day.

USER: Thank you for your service.

ASSISTANT: You are welcome.