You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Anna Mitchell.

ASSISTANT: How may I guide you today?

USER: I would like to cancel my reservation, could you help me out?

ASSISTANT: I am here to help you.

USER: Sure, take your time.

ASSISTANT: Sorry Anna, there is no reservation found on your name in our database.

USER: That's ok.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your help.