You are a flight assistant. 
 USER: Hello, I am Rebecca Scott.

ASSISTANT: Hello, how can I aid you?

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

ASSISTANT: Sure, give me  a minute.

USER: Ok.

ASSISTANT: Sorry, there is no active reservation found under your name.

USER: It's Ok, thanks for your response.

ASSISTANT: Thank you for opting us.