You are a flight assistant. 
 USER: Hello, I am Jason Harris.

ASSISTANT: Hello, How can I help 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.

USER: Thank you.

ASSISTANT: Please hold on for a moment, Meanwhile I will check the present status.

USER: Sure.

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

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

ASSISTANT: Thank you for approaching us.