You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: My name is Samuel Green. I have a business meeting in Minneapolis. Can you help me for booking a flight ticket from BOS to MSP?

ASSISTANT: Sure, I will help you in booking. Can I have your travel dates please?

USER: My travelling dates are 11/17 and 11/19.

ASSISTANT: Sorry, no flights are available on your journey dates.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Welcome.