You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what kind of assistance are you expecting from my end?

USER: Please reserve me a flight ticket from PHL to PHX.

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: My travel dates are May 18 and May 20.

ASSISTANT: May I know your name to fill the reservation form?

USER: I am Charles Hernandez.

ASSISTANT: May I know your connection limit?

USER: I prefer connecting flight for this trip.

ASSISTANT: Which airlines you prefer to travel?

USER: I am comfortable with any airlines.

ASSISTANT: Ok, any limitations in flight timings?

USER: No.

ASSISTANT: Here I found an economy class airlines in Delta airlines, can I proceed with it?

USER: Please proceed.

ASSISTANT: Your ticket has been booked with 1006 flight. Have a safe flight.

USER: Thank you.

ASSISTANT: Thank you for reaching us.