You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: Would it be possible to cancel my reservation, which I have done with my name?

ASSISTANT: Sure, may I know your name to check for the previous reservation?

USER: My name is Lisa Hernandez.

ASSISTANT: Please allow me a moment.

USER: Ok.

ASSISTANT: There is no reservation found under your name in our data base.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for contacting us.