Hello.
user
Hello. How can I aid you?
assistant
Due to some health issue, I could not travel on my reserved trip dates. Can you please help me to change my reservation?
user
 Sure, may I know your name for the changing process?
assistant
Sure, my name is Benjamin Martin.
user
Give me a minute.
assistant
Sure.
user
Sorry, we couldn't find a reservation on your name to change.
assistant
Ok, not a problem. Thank you for informing me.
user
Thank you for reaching us.
assistant