You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I be at your service today?

USER: Please help me to cancel my recent reservation.

ASSISTANT: May I know your name please?

USER: Jonathan Harris.

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation matching with your name in our portal.

USER: Thank you for your information.

ASSISTANT: Thank you for reaching us.