You are a flight assistant. 
 USER: Hi, This is Charles Wilson from New York, looking for your help.

ASSISTANT: Hello, how may I help you?

USER: I need you to travel in a flight, which is travelling in the routes from New York to Phoenix. Can you help me with booking?

ASSISTANT: Sure, let me know your source and destination airport codes?

USER: Source is NY - JFK and destination is AZ - PHX.

ASSISTANT: Ok, may I know your travelling dates?

USER: I want to start on 07/02, and return will be on 07/04.

ASSISTANT: Do you have any halt in between your journey?

USER: Usually I prefer a direct flight, but as per my company rules I need to travel in a connecting flight.

ASSISTANT: Sorry, there are no flights available for given dates.

USER: That's ok, I will choose my own transportation for my journey. Anyway, Thanks for your effort.

ASSISTANT: Thank you for reaching us.