Hello.
user
Hello. How may I assist you?
assistant
I am Mary Jackson. Due to my health problem I want to change my reservation, can you please help me to change my reservation?
user
Sure, please wait for a while.
assistant
Ok.
user
Sorry Mary, there is no reservation found basis on your details.
assistant
Ok, no problem. Thanks for your service.
user
Thank you for utilizing our service.
assistant