You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you please help me to book a flight from JFK to reach Denver?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: My travelling dates are on Oct 30th to Nov 1st.

ASSISTANT: Can you please share your connection limit?

USER: I need a flight with a flag stop.

ASSISTANT: Is there any time concern?

USER: I would like to return in evening time.

ASSISTANT: Do you have any class preference?

USER: I am okay with any class.

ASSISTANT: May I know your name please?

USER: My name is Jeffrey Thomas.

ASSISTANT: Wait a moment please.

USER: Make sure that I usually prefer to go in a well known airline.

ASSISTANT: Jeffrey Thomas, there are no flights available in your route.

USER: No issues, thank you.

ASSISTANT: Thank you for choosing us.