You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am looking for a direct flight to visit Trade fair at Atlanta. Can you book a flight for me?

ASSISTANT: Sure, I can do that for you. May I know your name?

USER: My name is Nicole Rodriguez.

ASSISTANT: Thank you. Could you please provide me your travel dates?

USER: I will travel on Feb 3 and return on Feb 5.

ASSISTANT: May I know your source and destination airport codes?

USER: My source point is CLT and my destination is ATL.

ASSISTANT: Sure, do you have any class preference?

USER: No.

ASSISTANT: Ok, please wait for a while.

USER: Sure, please book my depart flight in morning.

ASSISTANT: I am sorry to inform you that there is no direct flight available on your preferred travel dates.

USER: Ok, thank you for the information.

ASSISTANT: You are most welcome.