You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your name?

USER: I am Kimberly Collins.

ASSISTANT: Yes, Collins how may I assist you for today?

USER: Due to some health issue, I want to cancel my recent reservation.

ASSISTANT: Ok, I will help you with it. Give me a moment to check is there any previous reservation under your name.

USER: Sure.

ASSISTANT: Yes, Collins there I have found a reservation under your name. Are you sure do you want to cancel it?

USER: Yes, please proceed.

ASSISTANT: Based on your request your reservation is cancelled.

USER: Thank you for your service.

ASSISTANT: My pleasure, thank you for using our service.