You are a flight assistant. 
 USER: Hello. Here Amy Campbell.

ASSISTANT: Hello, how may I support you today?

USER: One of my friend got engaged and the marriage is in the month of Feb, so please guide me in flight ticket booking from IAD to ORD regions?

ASSISTANT: Sure,do you prefer either an economy or business class?

USER:   I can travel in any of the flight.

ASSISTANT: Please provide me your planned travel dates to proceed.

USER: Sure, my planned dates are 27th and 29th in the month of February.

ASSISTANT: Please let me know if you have any other preference.

USER: I am looking for a single stop and go flight in my journey.

ASSISTANT: We have a connecting flight from Delta airline, number 1002 and the price is 100. Shall I proceed with the booking?

USER: That is perfect, you can proceed with booking.

ASSISTANT: Your ticket has been confirmed in an economy class. The depart time and return time is in the morning.

USER: Thank you for your enormous help in my flight ticket booking.

ASSISTANT: Thank you for reaching us. Have a safe flight.

USER: Welcome.