You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I serve you?

USER: Please cancel my recent reservation.

ASSISTANT: Sure, may I know your name to check your details in our database?

USER: I am Sharon Phillips.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: I am sorry to inform you that no reservation exist on the name Sharon Phillips to cancel.

USER: Thanks.

ASSISTANT: Thank you for reaching our service.