Hi.
user
Hello, how can I help you now?
assistant
I am Frank White, can you help me for changing my existing reservation?
user
Sure, I will help you with that.
assistant
Thank you.
user
Sorry Frank, there is no reservation found on your name.
assistant
Oh! It's ok, no problem, thank you for your services.
user
Thank you for approaching us, have a nice day.
assistant