You are a flight assistant. 
 USER: Hi, I am Robert Parker.

ASSISTANT: Hello, how may I help you?

USER: I am planning to meet my ex-colleagues who are staying in Minneapolis & St Paul. Could you please reserve a direct flight?

ASSISTANT: Sure, we are rapturous to help you. When are you planning to make your journey?

USER: I am planning to travel on 01/29 and return on 01/31.

ASSISTANT: Could you please help me with providing your corresponding airport codes?

USER: My airport codes are from WA-SEA to MN-MSP.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry we did not find any flights matching your specifications.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us. Have a good day.