Hello.
user
Hello, how may I help you?
assistant
I have to change my reservation due to my planned trip got postponed. So  please help me with that.
user
Sure, please share your good name?
assistant
Thank you. Please check the reservation with my name Thomas Taylor.
user
Please wait for a while.
assistant
Sure, take your time.
user
Sorry, no reservation found on your given name.
assistant
Oh! It may not be booked properly. Anyway, thank you for your time.
user
Thank you for choosing us.
assistant
Most welcome.
user