Hi.
user
Hello.
assistant
Dennis Turner here.
user
How can I help you?
assistant
The event which I am planning to attend has been cancelled. Can you help me to cancel my reservation?
user
Sure, please give me a minute.
assistant
Sure, take your time.
user
Dennis, there is no reservation found with your details.
assistant
It's ok, no problem. Thank you  for helping me.
user
Thank you for contacting us.
assistant