You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How may I help you?

USER: I am Michelle Rodriguez and I would like to head from Atlanta, GA - ALT on 03/01 to celebrate my father birthday. Can you help me book a flight ticket?

ASSISTANT: OK, Can you please provide your destination and return date?

USER: My destination is Minneapolis & St. Paul, MN - MSP and return on 03/03.

ASSISTANT: May I have your correct source code please?

USER: My source is Atlanta, GA - ATL.

ASSISTANT: OK, just wait for a while.

USER: OK.

ASSISTANT: Unfortunately, there is no flight available that matches your requirements.

USER: OK, thank you.