HI.
user
Hello. How may I be of your help?
assistant
I am Catherine Green. I want to change an existing reservation due to sudden change in my trip. Can you help me?
user
Sure, I'll help you in changing an existing reservation.
assistant
Ok.
user
Please wait a moment.
assistant
Sure.
user
Thank you for waiting, unfortunately there is no reservation found by this name.
assistant
No issue. Thank you.
user
Thank you for approaching us.
assistant