You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Lisa Edwards.

ASSISTANT: How may I help you?

USER: I would like to cancel my recent reservation, can you help me with this?

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation matching with your name in our portal.

USER: That's fine, thanks for your information.

ASSISTANT: Thank you for reaching us.