You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: Myself Nicholas Lee.

ASSISTANT: How can I help you?

USER: I want to cancel my recent reservation due to some health issues, can you help me?

ASSISTANT: Sure. There is reservation by name Nicholas Lee.

USER: Ok, please cancel it.

ASSISTANT: Reservation is cancelled.

USER: Thank you for guiding me.

ASSISTANT: Thanks.