You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Gary Smith.

ASSISTANT: How can I assist you today?

USER: Can you please help me out to book a flight from PHX to OAK?

ASSISTANT: Sure, I can help you with that. May I know your planned departure and return travel dates please?

USER: Sure, my travelling dates are Feb 6 - Feb 8.

ASSISTANT: Ok, do you have any other specifications?

USER: Yes, I need a connecting flight.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flights available for you on those dates.

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for choosing us, have a great day.