You are a flight assistant. 
 USER: Hi. I am Michael Lopez.

ASSISTANT: Hello, how may I aid you today?

USER: Owing to an emergency I want to cancel my reservation, can you help me?

ASSISTANT: Sure, I will help you with that. Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no active reservation found on your name in the database.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for choosing us.