Hello.
user
Hello. How may I serve you today?
assistant
I am Michelle Evans. I would like to change my existing reservation, can you please help me?
user
Sure, I'll help you in changing an existing reservation. Please wait a moment.
assistant
Sure, I will wait for your response.
user
Thank you for waiting, unfortunately there is no reservation found by this name.
assistant
No problem, thank you for checking.
user
Thank you for choosing us.
assistant