You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Kathleen King here.

ASSISTANT: King, how may I help you?

USER: Because of heavy rainfall, my concert is cancelled. Can you cancel my ticket?

ASSISTANT: Sure, please hold on.

USER: Sure.

ASSISTANT: Sorry, no reservation found by your name.

USER: It's ok. Thank you for your time.

ASSISTANT: Thank you for contacting us.