You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: My name is Matthew Evans. I would like to travel from BOS to ORD.

ASSISTANT: Ok, may I know your travel dates to proceed.

USER: My preferable dates are from 10/02 to 10/04.

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

USER: That's ok. Thank you for your time.

ASSISTANT: You are most welcome.