You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: My name is Carol Allen, owing to an emergency I want to cancel my reservation, can you help me?

ASSISTANT: Sure Allen, give me a minute.

USER: Ok.

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

USER: No problem. Thank you for checking.

ASSISTANT: Welcome.