You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Anna Harris, want to cancel my trip due to some personal reason. Can you help me?

ASSISTANT: Please wait a moment, let me check with the cancellation?

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your given name.

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching our service.