You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am planning to visit Walker Art Center at Minneapolis, could you help me with ticket booking?

ASSISTANT: Sure, may I know when are you planning to visit Walk Art Center?

USER: I am planning it on the date of 09/06.

ASSISTANT: Please provide your airport codes.

USER: My nearest airport code is ATL and my destination airport code is MSP.

ASSISTANT: May I know when are you planning to return?

USER: I am planning to return on 09/08.

ASSISTANT: Please wait for a moment. Let me check our database, may I know your name for further proceedings?

USER: My name is Michelle Green.

ASSISTANT: Sorry Green, no flights found.

USER: Ok, no problem. I will choose any other way to reach there.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your information.