Hi.
user
Hello, how may I help you?
assistant
Could you please change my existing reservation due to postpone of my trip?
user
Sure, can I know your name?
assistant
My name is Pamela Phillips.
user
Please hold on a moment.
assistant
Sure.
user
Sorry, there is no reservation found on given name.
assistant
Not a problem, thank you for checking.
user
Thank you for reaching us.
assistant