You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What type of help that you need right now?

USER: I am William Anderson from Charlotte. Can you please help me with flight ticket booking from CLT to AUS?

ASSISTANT: Ok, may I know your dates please?

USER: Sure, I need to travel on dates of 04/28 and 04/30.

ASSISTANT: Let me check with your details please wait.

USER: Sure, but make sure that connection limit should be 1.

ASSISTANT: Non of the airlines is providing a flight to reserve a seat for your in any of the flight, sorry for the trouble.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: You are welcome.