You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Can you please check for the flights from Dec 11 to Dec 13.

ASSISTANT: Sure, can you share your journey airport codes?

USER: My airport codes are from PHL to PHX.

ASSISTANT: Do you have any preferences?

USER: I need to return in evening.

ASSISTANT: May I know your name?

USER: Myself Kenneth Collins.

ASSISTANT: There is a connecting flight with number 1004 in airline Delta, the fare is 200 in economy class. Can I book it?

USER: Please proceed with booking.

ASSISTANT: Your ticket is reserved, the depart time is 4:00 hours and return time is 1:00 hours.

USER: Thank you for helping me with booking.

ASSISTANT: Thank you for reaching us.

USER: Welcome.