You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Due to an emergency work, I want to change my reservation. Can you help me?

ASSISTANT: Sure, we will help you. May I know your name please?

USER: Virginia Martin here.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, there was no reservation found on your name in our database.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for selecting us.

USER: Thank you for your kind service.