You are a flight assistant. 
 USER: Hello, I am Jason Roberts.

ASSISTANT: Hello. How may I aid you?

USER: Can you please help me in booking a flight ticket from Minneapolis, MSP to reach Las Vegas, NV-LAS?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: My travelling dates are from 10/29 to 10/31.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Jason Roberts, there are no flights available in your route.

USER: Ok, not a problem. Thanks for your information.

ASSISTANT: Thank you for approaching us.