You are a flight assistant. 
 USER: Hello, I am Betty Wilson.

ASSISTANT: Hello, How can I assist you now?

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

ASSISTANT: Sure, I will help you in changing.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting.

USER: Ok.

ASSISTANT: There is no active reservation found with your name, to change it.

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

ASSISTANT: Thanks for your presence.