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

ASSISTANT: Hello,. How can I be of your assistance today?

USER: I just want to cancel my recent reservation, due to my interview has been cancelled. Can you assist me with cancellation?

ASSISTANT: Sure, we will help in cancelling your reservation. Wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, Unfortunately, there is no reservation found on your name Dorothy Perez.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thanks for you assistance.