You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I am Raymond Brown. I want to cancel my recent reservation due to health issues, can you help me in cancel reservation?

ASSISTANT: Sure, Please wait a second.

USER: Ok.

ASSISTANT: We have found a reservation, Shall I cancel it?

USER: You can cancel it.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you.

ASSISTANT: Thank you for opting us.