You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you help me to book a flight ticket from DEN to JFK?

ASSISTANT: Sure, I am here to help you. May I know on which dates you want to travel?

USER: My travelling dates are 09 and 11 of Oct.

ASSISTANT: Do you need any connection in between the journey?

USER: I need a direct flight.

ASSISTANT: Ok, please share your other preferences.

USER: No.

ASSISTANT: May I know your name for further process?

USER: I am James Jackson.

ASSISTANT: OK, please stand by.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry no flights found with your details.

USER: It's ok, not a problem, thank you.

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