You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: My self Patrick Carter.

ASSISTANT: Nice to meet you Carter.

USER: I want to change my existing reservation, due to heavy rain. Can you pleas help me with that?

ASSISTANT: Sure, hold on for a moment please.

USER: Ok, take your time.

ASSISTANT: I found a flight with your given details.

USER: Thank you.

ASSISTANT: Please provide me your new airport codes and journey dates please?

USER: Ok, my new airport codes are DTW and DEN. My fare trip dates are 11/14 and 11/16.

ASSISTANT: I found a flight for you with single connection and it costs you 100. Shall I proceed?

USER: Please proceed to book a flight.

ASSISTANT: Your ticket has been booked with Delta airline with flight number 1009.

USER: Thank you for booking, I had a great service.

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