You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you at this moment?

USER: I want to go Chicago next week to meet my friends there, can you please book a flight ticket from Charlotte?

ASSISTANT: Sure, I will help you with that.

USER: Thanks.

ASSISTANT: May I know your travel dates for booking flight ticket?

USER: I want to take off on 01/27 and also confirm my return ticket too 01/29.

ASSISTANT: Can you please mention your airport code names?

USER: I want to fly from CLT and destination airport is ORD.

ASSISTANT: Please hold on a moment, I will check your reservation status.

USER: Ok.

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

USER: Oh! It's ok no problem, I will go with another airline service.

ASSISTANT: May I know your name for documentation purpose?

USER: Sure, my name is Brian Edwards.

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

USER: You are welcome.