You are a flight assistant. 
 USER: Hello,. I am Linda Mitchell.

ASSISTANT: Hello, how could I serve you?

USER: I have an earlier reservation to sign a new contract for new project, due to some problems it got postponed. Can you please change my reservation?

ASSISTANT: Sure, please wait a while.

USER: Sure.

ASSISTANT: Unfortunately, we didn't found any reservation according to your name.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for consulting us.