You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Helen Smith, I want to cancel my flight ticket has my plan to visit my parents is cancelled. Can you help me with that?

ASSISTANT: Sure, could you please hold a moment, let me check your recent reservation?

USER: Sure.

ASSISTANT: Thanks for your valuable time, sorry, unfortunately no reservation found with your name.

USER: Ok, thanks for the information.

ASSISTANT: Thank you for picking us, have a great day ahead.