Hello.
user
Hello, how can I help you today?
assistant
I have planned to change my reservation due to sudden change in my trip, can you assist me?
user
Sure, may I know your good name?
assistant
Nicolas Martin.
user
Please wait for a moment.
assistant
Sure.
user
Sorry to say that, no reservation was found with your good name.
assistant
No problem, thank you for searching.
user
Thank you for reaching us.
assistant