Hi.
user
Hello, how may I help you?
assistant
Could you please change my existing reservation due to postpone of my trip?
user
Sure, please share your good name?
assistant
My name is Jacob Johnson.
user
Please wait for a while.
assistant
Sure.
user
Sorry, no reservation found on your given name.
assistant
Not a problem, thank you for checking.
user
Thank you for choosing us.
assistant