You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you check direct flight for me from DEN?

ASSISTANT: Yes, can you please provide the return details?

USER: My destination code is BOS.

ASSISTANT: Ok, please share your travelling dates?

USER: My travelling dates are from 01/16 to 01/18.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

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

USER: That's fine.

ASSISTANT: May I know your name please?

USER: Myself Jerry Adams. Thank you for your time.

ASSISTANT: Ok, thank you.