Hi. I am Gary Harris.
user
Hello, how can I aid you today?
assistant
I would like to change my exisiting reservation, due to health issue. Can you help me in my changing reservation?
user
Sure, please wait for a while, I will check and get back to you.
assistant
Sure, I will wait for your response.
user
Sorry, there was no reservation found with your name to change.
assistant
Ok, Not an issue. Thank you for your quick response.
user
Thank you for choosing us.
assistant