You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I help you?

USER: Please cancel my recent reservation.

ASSISTANT: Sure, May I know your name?

USER: Ok, I am Alexander Lopez.

ASSISTANT: Please wait a second.

USER: Sure.

ASSISTANT: Sorry, No reservation found on your name.

USER: Ok, Thank you for the quick response.

ASSISTANT: Thank you for availing us.