You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Michael Hill here, could you book my ticket from LGA to MSP?

ASSISTANT: I am gleeful to help you with that booking. May I know your trip dates?

USER: My trip dates are 06/29 and 07/01.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, no flights are available on your desired route.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching me.