You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brandon Brown.

ASSISTANT: How may I serve you now?

USER: I need to cancel my recent reservation due to cancel my my event in shopping mall. Could you please help me in doing that?

ASSISTANT: Ok. I will help you, please standby.

USER: Sure.

ASSISTANT: Thanks for waiting, we could not find any reservation with your name to cancel.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.