You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Sure, I can help you. May I know your name?

USER: Thank you. Nancy Smith here.

ASSISTANT: Thank you. Please wait for a while. Let me check your reservation status.

USER: Ok.

ASSISTANT: Sorry, I have not found any reservation under your name in our database.

USER: That's Fine. Thank you.

ASSISTANT: You are welcome and thank you for choosing us.