You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I want to change my reservation as my college orientation day program got postponed. Can you help me?

ASSISTANT: May I know your name please?

USER: I am Nancy Jackson.

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

USER: Ok fine, thanks for your assistance.

ASSISTANT: Thank you for opting us.