Hi.
Hello. How can I assist you at this moment?
Can you help me in changing my recent reservation, as my exam is postponed?
Sure, I am happy to help you with that.
Ok.
Can I have your good name please to check your reservation status?
I am Emma Lee.
Ok, please wait a moment.
Sure.
Yes Emma Lee, your reservation has found so please help me with your travelling dates.
My trip dates are Jul 21 to Jul 23.
Ok, please let me know the airport codes of your journey locations.
My source is ORD and destination is OAK.
Do you prefer any specific timings to travel?
No.
Are you looking for any connecting flight?
I am looking for a stopover flight.
Do you have any other specifications?
I do not have any other specifications.
Delta airlines running a direct flight in your route which can provide a ticket with fare 100 in economy class. Are you ok with this flight?
You can reserve it.
Ok Emma Lee, your reservation has changed successfully.
Thank you for your help.
Thank you for choosing us, have  a great journey.