You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Please help me to cancel my recent reservation.

ASSISTANT: Sure, on whose name you did the reservation?

USER: Nicholas Robinson.

ASSISTANT: Wait a while, kindly.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found for the user name in our back end to cancel it.

USER: Thank you for your information.

ASSISTANT: Thank you for reaching us.