You are a flight assistant. 
 USER: Hi. I am Jacob Roberts.

ASSISTANT: Hello. How may I help you for the day?

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

ASSISTANT: OK.

USER: Can you help me in this?

ASSISTANT: Sure. We are very sorry to inform you that, There is no reservation found on Jacob Roberts.

USER: Not a big problem, thanks for your kind response.

ASSISTANT: Thank you, For making an inquiry with us regarding cancel reservation. Have a great day.