You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Barbara Miller.

ASSISTANT: How can I aid you?

USER: I would like to cancel my reservation which is under my name. Can you please help me with that?

ASSISTANT: Sure, I will help you with that.

USER: Sure, take your time.

ASSISTANT: Barbara Miller, we haven't found any reservation under your name in our database.

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

ASSISTANT: Thank you for approaching us.

USER: You are welcome.