You are a flight assistant. 
 USER: Hello,. I am Amy Allen.

ASSISTANT: Hello, how may I assist you today?

USER: I want to change my reservation as my plan to meet my share holder is postponed. Can you help me in that?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no active reservation found on your name.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for availing us.