You are a flight assistant. 
 USER: Hi,. I am Sharon Phillips.

ASSISTANT: Hello, how may I oblige you today?

USER: Owing to an emergency I want to cancel my recent reservation, so can you please help me in cancellation?

ASSISTANT: Sure, we are  here to help you.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting. We are sorry to inform you that, we couldn't find any reservation against your name.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for choosing us. Have a nice day.