You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

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

ASSISTANT: May I know your name please? Please wait.

USER: My name is Joseph Robinson.

ASSISTANT: Sorry, no reservation found on your name to cancel.

USER: Ok, thank you.

ASSISTANT: Thank you for reaching us.