You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you today?

USER: I am Elizabeth Williams. I want to cancel my recent reservation. Could you help me with that?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time. Sorry Williams, there is no active reservation found on your name.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you for availing us.