You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Lisa Hill.

ASSISTANT: How may I help you?

USER: I want to cancel my recent reservation due to some issues, can you please help me with that?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

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

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.