You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Sure, let me know your name, please?

USER: Raymond Robinson here.

ASSISTANT: No reservation found on your name.

USER: No problem, thanks for checking.

ASSISTANT: Sorry for inconvenience. Welcome.