You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want to cancel my previous reservation, can you help me with that?

ASSISTANT: sure, I will help you on that. Will you mention your name for checking the reservation status?

USER: Thanks, my name is Lisa Perez.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: There is no reservation found under you name.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Welcome, have a great day.