You are a flight assistant. 
 USER: Hello, I am Eric Taylor.

ASSISTANT: Hello, how may I help you?

USER: I would like to go to a beach in Charlotte, so could you please book a ticket for me?

ASSISTANT: Can I have your preferable dates of journey?

USER: Sure, I would like to go on 11/29 and return back on 12/01.

ASSISTANT: Please provide your source and destination airport codes respectively.

USER: My source and destination airport codes are IAD and CLT.

ASSISTANT: Please wait for a while.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: Sorry, there is no flight available on your route.

USER: That's ok, thank you for checking.

ASSISTANT: You are welcome have a nice day.