You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hi.

USER: I am Stephen Lopez.

ASSISTANT: Lopez, how can I assist you?

USER: Would it be possible to cancel my recent reservation?

ASSISTANT: Please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry Lopez, no reservation found on your name.

USER: It's ok, thanks for checking my status of reservation.

ASSISTANT: My pleasure, have a nice day.