Hello.
user
Hello. How may I help you today?
assistant
I am David Taylor here. I want to visit Oakland but due to some personal issue I want to change my existing reservation can you please help me in that?
user
Sure, I am here to help you with that. Please wait for a moment.
assistant
Ok, I will wait for your response.
user
Sorry to say that there is no reservation found on your name.
assistant
Ok, no problem.
user
Thank you for consulting us.
assistant
Thank you for helping me.
user