You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: My leaves approval is not confirmed. So, I would like to cancel my reservation. Can you help me?

ASSISTANT: Sure, I am here to help cancel your reservation. But, I need your name to check that reservation details.

USER: Please check with the name Eric Johnson.

ASSISTANT: Sorry, we cannot find any reservation in our database with your name.

USER: That's fine, thank you for providing the information.

ASSISTANT: It's my pleasure, have a great day.