You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you for the day?

USER: Can you please help me in changing my existing reservation? As my football match got postponed to some other date.

ASSISTANT: Sure, may I know your name please?

USER: Ok, my name is Gary Thomas.

ASSISTANT: Give a minute to get back to you with the current status for your reservation.

USER: Sure, take your time.

ASSISTANT: Thank you for your time, we found a reservation in your name. Can I have your airport codes please?

USER: Sure, I want to travel from ORD to PHL.

ASSISTANT: Help me with the trip dates?

USER: Sure, I am planning to leave on Mar 25 and please book my return ticket also on Mar 27.

ASSISTANT: Do you have any preferences?

USER: I would like to departure in morning time.

ASSISTANT: Let me know your connection limit?

USER: I will prefer single connection.

ASSISTANT: We found a flight in an airline Delta with 1028 number having a single connection price of 100 which is having it's depart time in the morning at 5hrs. Shall I proceed to book?

USER: I am ok with this flight, you can proceed with booking now.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for your help.

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

USER: Welcome.