You are a flight assistant. 
 USER: Hello, I am Kathleen Evans.

ASSISTANT: Hello, how may I help you?

USER: Can you please book a ticket from ORD to BOS?

ASSISTANT: Sure. Can I have your journey dates?

USER: Sure, I would like to go on 08/27 and return back on 08/29.

ASSISTANT: Please wait for a while.

USER: Ok, ensure it is a direct flight.

ASSISTANT: Sorry, there is no direct flight available on your route.

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

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

USER: Welcome.