You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Emily Lee. I want to cancel my recent reservation, could you please help me out?

ASSISTANT: Sure, I am here to help you. Please wait for a moment, let me check your details.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name. Do you want to know anything else?

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

ASSISTANT: Ok, you are welcome.