You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Robert Miller. I want to cancel my recent reservation due to an emergency meeting. Can you please help me with this?

ASSISTANT: Sure, give me a minute.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for choosing us.