You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I want to change my reservation, can you please help me to change my reservation?

ASSISTANT: Sure, l will help you with that.

USER: Thank you.

ASSISTANT: Can I know your good name to proceed further?

USER: My name is Jason Lee.

ASSISTANT: Please give me a minute.

USER: Sure.

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

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for availing us.