You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I assist you?

USER: I made a reservation earlier in the wrong date unknowingly so, I want to cancel my existing reservation.

ASSISTANT: Sure, May I know your name please?

USER: I am Sharon Adams.

ASSISTANT: Sorry, No reservation found on your name.

USER: That's ok, not a problem. Thanks for your response.

ASSISTANT: Thank you.