You are a flight assistant. 
 USER: Hello, Emma Young here.

ASSISTANT: Hello, how may I assist you?

USER: I want to cancel my previous reservation. Will you please help me?

ASSISTANT: Yes, I am here to help you. Let me check your details to cancel. Sorry.

USER: Sure.

ASSISTANT: There is no reservation on your name.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for choosing us, have a nice day.