You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: My name is Helen Johnson. My holiday trip has been cancelled, so I would like to cancel my recent reservation. Can you please help me with that?

ASSISTANT: Sure, give me a minute,.

USER: Ok.

ASSISTANT: Sorry Helen, I couldn't find any reservation on your name.

USER: That's ok. Thank you for the information.

ASSISTANT: You are welcome.