Hi.
user
Hello.
assistant
I am Helen Williams.
user
How may I help you?
assistant
Can you help me for changing my existing reservation?
user
Sure, I will help you. Please wait a minute.
assistant
Thank you. Ok.
user
Sorry to tell you, there is no reservation found on your name.
assistant
Oh! It's ok, no problem. Thank you for your services.
user
You are welcome. Thank you for reaching us.
assistant