Hello, Thomas Miller here.
user
Hello. How can I aid you today?
assistant
I need your help to change my recent flight booking. Can you?
user
Ok, I will help you with that. Please wait for a while.
assistant
Ok, I will wait for your response.
user
Sorry, no reservation found on your name to change.
assistant
That's ok. Thank you.
user
Thank you for reaching us.
assistant