Hello.
user
Hello, how can I help you?
assistant
I am Sandra Parker. I want to change my existing reservation due to postpone of my exams. Can you help me in that?
user
Sure, I am here to help.
assistant
Thank you.
user
Please wait while I fetch your current reservation.
assistant
Ok.
user
We have found your reservation, please share your new airport codes.
assistant
My airport codes are LAX to IAH.
user
Please share your updated  travelling dates.
assistant
I will fly on Jan 17 and return on Jan 19.
user
Do you have any other preferences?
assistant
I need a connecting flight.
user
We have a flight from UA airline, number 1013 and the price is 100. Shall I proceed with the booking?
assistant
You can proceed.
user
Your ticket booking is done in economy class.
assistant
Thank you for your service.
user
Thank you for opting us.
assistant