You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I want to cancel my recent reservation due to some official work. Can you help me for this one?

ASSISTANT: Sure, may I know your name?

USER: Sure, Patricia Harris here.

ASSISTANT: Sorry, there is no reservation found  on your name.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for choosing us.