Hello.
user
Hello, how can I help you at present?
assistant
I am Charles Collins, I want to change my reservation due to sudden bad health condition.
user
Sure, I change your reservation right now. Please wait for a while.
assistant
Sure.
user
Thanks for waiting, there was no reservation found on your specified name.
assistant
Ok, thank you for informing me.
user
Thank you for approaching our service.
assistant