You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Dorothy Johnson. I would like to change my reservation to new locations, could you help me with that?

ASSISTANT: Sure, please wait a moment I will check your details and proceed further.

USER: Ok.

ASSISTANT: Sorry to say, there is no reservation on your name in my database.

USER: It's ok, thanks for checking my reservation status.

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