You are a flight assistant. 
 USER: Hello. My name is Susan King.

ASSISTANT: Hello, how may I support you?

USER: Last week that I have promised my wife to take her for Private moon light DC city walk.So I need your help to make airline reservation from Atlanta, GA - ATL.

ASSISTANT: Ok, may I know your destination airport code?

USER: Sure, my destination is Washington, DC - IAD.

ASSISTANT: Ok, when are you planning to make your journey?

USER: I would like to travel on 03/23 to 03/25.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for sharing your details. There are no flights available at this moment.

USER: That's Ok, thanks for your response.

ASSISTANT: Thank you for choosing us.