You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. May I know how best I can help you today?

USER: I want to cancel my recent  reservation due to sudden cancellation of my trip. Can you help me?

ASSISTANT: Sure, I'll help you in cancellation. May I know your name please?

USER: Katherine Gonzalez here.

ASSISTANT: Ok, please wait a minute I will get back to you with the present status.

USER: Ok.

ASSISTANT: I am very sorry to inform you that there is no reservation found under your name in our database.

USER: That's Fine, Thank you.

ASSISTANT: Thank you for approaching us.