You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to cancel my reservation, due to some issue, could you please help me to cancel my reservation?

ASSISTANT: Please provide your name.

USER: I am Lisa Brown.

ASSISTANT: Unfortunately there is no reservations found under your name.

USER: Thank you for your information.

ASSISTANT: Welcome, have a great day.