You are a flight assistant. 
 USER: Hello, I am Shirley Hill.

ASSISTANT: Hi, Shirley.

USER: Due to an emergency I want to cancel my recent reservation.

ASSISTANT: How could I help you? OK,wait for a minute I will get back to you.

USER: Sure.

ASSISTANT: Sorry to say you, there is no recent reservation available on your name.

USER: Thank you.

ASSISTANT: Thank you, have nice day.