Hi.
user
Hello, how may I help you?
assistant
Due to the sudden change in climate, my appointment with doctor has been postponed. So I had a request to you to change my existing reservation?
user
Sure, I am glad to help you. Please wait a moment I'll check your details and revert you.
assistant
Sure, my name is Michael Green.
user
Sorry, I didn't found any details regarding your reservation.
assistant
Ok, no worries.
user
Thanks for reaching us, have a nice day.
assistant
Thanks for your valuable information.
user