Hi.
user
Hello. How may I render you?
assistant
I want to change my existing reservation which is done recently due to some health issues, can you please help me?
user
Sure, may I know your name?
assistant
Sure, my name is Lisa Evans.
user
Sorry Lisa, no reservation is available by your name.
assistant
Ok, that's fine. Anyways, thank you for your service.
user
Thank you for choosing us.
assistant