You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Due to inconvenience of my work, I want to change my reservation. Can you please help me for that?

ASSISTANT: Sure, we are here to help you.

USER: Thanks.

ASSISTANT: Can you share me your good name please?

USER: My name is Eric Anderson.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: We are sorry to say that, there is no active reservation found on your name.

USER: Anyway, thanks for the information.

ASSISTANT: Thanks for reaching us, wish you a great day.