You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me with cancelling my previous booking now?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your name?

USER: My name is Nancy Nelson.

ASSISTANT: There is no reservation found under your name to cancel.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.