You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: I am Brian Allen, want to cancel my recent reservation due to some personal issue. Please help me out with that.

ASSISTANT: Sure, please wait a minute.

USER: Sure, take your time.

ASSISTANT: I have found your reservation.

USER: Please cancel it.

ASSISTANT: Your reservation is cancelled successfully.

USER: Thank you for your help.

ASSISTANT: Most welcome.