You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Joseph Hall. Due to an emergency, I need to cancel my reservation. Can you please help me with it?

ASSISTANT: Sure, I will help you. Please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there is no reservation on your name.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you.