You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I render you today?

USER: Please cancel my recent reservation.

ASSISTANT: Sure. Please help me with your name.

USER: My name is Shirley Roberts.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your presence. Sorry to inform you that, there is no reservation found on your given name.

USER: Thank you.