You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Michael Green. I planned to travel from OAK to MSP, can you please help me in booking a flight ticket?

ASSISTANT: Ok, may I know your trip dates?

USER: I planned to travel on 01/08 and 01/10.

ASSISTANT: Sorry, there is no plane in your route.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for approaching us.