You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I aid you?

USER: I am Dorothy Robinson.

ASSISTANT: Ok.

USER: I made a earlier reservation to attend my friend marriage, due to some financial problems it got postponed. Can you please change my reservation?

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to inform that, there is no reservation found on your name.

USER: Ok, no issue. Thank you.

ASSISTANT: Thanks for approaching us.