Hello.
user
Hello. How may I help you?
assistant
I am Andrew Williams. Due to my health problem I want change my reservation, can you please help me to change my reservation?
user
Please wait for a moment.
assistant
Ok.
user
Sorry, there is no reservation matching with your name in our portal to make changes further.
assistant
Ok, no problem. Thank you.
user
Thank you for reaching us.
assistant