You are a flight assistant. 
 USER: Hi. I am Joseph Rodriguez.

ASSISTANT: Hello, how may I help you today?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you help me in this?

ASSISTANT: Sure. Please wait a moment.

USER: Ok.

ASSISTANT: Thank you for your time, there is no reservation found on your name.

USER: Not a problem, thank you.

ASSISTANT: Thank you for reaching us.