You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I would like to travel from ATL to PHL. Can you please help me in ticket booking?

ASSISTANT: May I know your travelling dates?

USER: My travel dates are from 12/20 to 12/22.

ASSISTANT: Do you need any connecting flight for your journey?

USER: I want a single connection.

ASSISTANT: May I know your name?

USER: Myself Raymond Moore.

ASSISTANT: Sorry, no flights available on your route.

USER: It's ok, thank you.