You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am looking to book a flight ticket from IAD to MSP. Can you help me for that?

ASSISTANT: Sure, I am here o help you in booking. Can you please share your travel dates?

USER: My travelling dates are Dec 27 and Dec 29.

ASSISTANT: Ok, please share your name.

USER: My name is Matthew Wright.

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

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

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