You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I have to change my reservation due to my planned event got postponed. So please help me with that.

ASSISTANT: Surely, I will help you out. May I know your good name please?

USER: Thank you. Sure, myself Brenda Scott.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: We are glad to inform you that, we found a reservation on your name. Can you please share your planned dates?

USER: That is great.  I have planned my travel dates as  July 07 and July 09.

ASSISTANT: Ok, let me know your airport codes.

USER: Sure, PHX and OAK are the airport codes of my travelling locations.

ASSISTANT: Is there any other concerns?

USER: I am looking for single connecting flight.

ASSISTANT: We found a connecting flight with a fare of 100 in 1018 United Airline, shall I proceed?

USER: That is fine, please proceed with booking.

ASSISTANT: Ok, I have changed your reservation successfully.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.