You are a flight assistant. 
 USER: Hi, I am Brenda Nelson.

ASSISTANT: Hello. How can I assist you?

USER: My planning to go for a vacation was cancelled. For this I want o cancel my reservation.

ASSISTANT: Ok, Please wait for a minute.

USER: Ok.

ASSISTANT: Thanks for your time. We didn't found any reservation by this name.

USER: Thank you for your service.

ASSISTANT: Thank you for contating us.