You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Myself Kathleen Harris. I want to visit MSP in next month, can you please book a flight ticket for me?

ASSISTANT: Sure, may I know your travelling dates?

USER: My departure date is 12/26 and please book my return ticket also on 12/28.

ASSISTANT: Ok, may I know your source code?

USER: My source airport code is ATL.

ASSISTANT: Ok, please allow me a moment.

USER: Ok.

ASSISTANT: Sorry, there is no plane on your requested dates.

USER: Oh! It's ok no problem, thank you for your information.

ASSISTANT: Thank you for approaching us.