You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Alexander Scott.

ASSISTANT: How can I help you for the day, Alexander Scott?

USER: I want to cancel my reservation due to some problem. Will you help me in that?

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

USER: OK,not an issue.

ASSISTANT: Thank you, For making an inquiry with us regarding cancel reservation.

USER: Thank you for sharing information.

ASSISTANT: Have a great day.