You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I want to change my recent reservation, can you help me with that?

ASSISTANT: Sure, we are here to help you with that. May I know your name to proceed for further?

USER: The ticket is under the name Steven Green.

ASSISTANT: Please wait for a while, let me check your reservation status.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting. There is no active reservation found with your name in our reservation list to change it.

USER: That's ok no problem. Thank you for checking.

ASSISTANT: Thank you for reaching us, have a great day.