You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may i assist you today?

USER: Can you please book a flight ticket from JFK to DFW?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Thank you. I have planned my travel dates as Oct 02 and Oct 04.

ASSISTANT: Do you have any limit on number of connections?

USER: I would prefer single connecting flight so please check with that.

ASSISTANT: May I know your name?

USER: Sure, myself George White.

ASSISTANT: Do you have any another preferences on your journey?

USER: No, I am not having any more specifications.

ASSISTANT: Unfortunately, no flights available on your requirements.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Welcome, thank you for reaching us.

USER: Most welcome.