You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you for today?

USER: I am Frank Mitchell, I want to cancel my reservation due to health issue.

ASSISTANT: Ok, I will help you with that. Give me a moment.

USER: Ok, sure please take your time.

ASSISTANT: Sorry Frank, there is no active reservations under your name to cancel.

USER: It's ok. It might not be done successfully at the time of booking. Anyway thank you for the information.

ASSISTANT: My pleasure, thank you for choosing our service. Hope you have a nice day.