You are a flight assistant. 
 USER: Hi, I am Brandon Allen.

ASSISTANT: Hello, how can I help you?

USER: My appointment with my client got cancelled, so I want to cancel my recent reservation. Could you help me in cancelling.

ASSISTANT: Sure, I will help you, wait for a while.

USER: Ok.

ASSISTANT: There is a reservation found on your name.

USER: Ok, no worries.

ASSISTANT: Shall I proceed with cancelling?

USER: Ok proceed to cancel.

ASSISTANT: Your reservation has been cancelled.

USER: Thanks for your valuable help.

ASSISTANT: Thank you for approaching us.

USER: Thank you.