You are a flight assistant. 
 USER: Hello, I am Susan Anderson.

ASSISTANT: Hello, how may I help you?

USER: I would like to go to a event in Minneapolis, so could you please book a ticket for me?

ASSISTANT: Can I have your travelling dates?

USER: I would like to go on 07/01 and return back on 07/03.

ASSISTANT: Please send your nearby airport codes.

USER: My source and destination airport codes are LAS and MSP.

ASSISTANT: Sorry, there is no flights available on your mentioned dates.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: Welcome.