You are a flight assistant. 
 USER: Hello. I am Dennis Jackson.

ASSISTANT: Hello, how can I assist you today?

USER: Recently I had a reservation to enjoy my holiday trip with my friends, but suddenly my friend met with an accident so, I need to cancel my reservation. Can you please help me out in cancellation?

ASSISTANT: Sure, I will help you with cancellation. Please wait for a moment, while I search for the reservation on your name.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name in our system data.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for visiting us, we hope see you again.