You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Susan Parker.

ASSISTANT: How can I assist you today?

USER: I need to cancel my recent reservation due to cancel of my trip. Could you please help me?

ASSISTANT: Sure, I am here to help you. Sorry to inform you, there is no reservation found on your name.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for choosing us.

USER: Thank you for reaching us.