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 name?
assistant
Donna Anderson.
user
Please wait a moment.
assistant
Sure.
user
Sorry to say, no reservation found with your name.
assistant
No problem, thank you for searching.
user
Thanks for reaching us.
assistant