You are a flight assistant. 
 USER: Hello,. I am Charles Perez.

ASSISTANT: Hello, how can I assist for the day?

USER:  I made a earlier reservation to go for a trip with my friends, but I met with an small accident I can't go to trip. Can you please cancel my recent reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting. we are sorry to inform you that, there is no reservation found with your name.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for choosing us, have a good day.