You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Kathleen Lopez.

ASSISTANT: How can I assist you at this moment?

USER: I want to change my reservation as my fare well party got postponed. Can you help me?

ASSISTANT: Sure Lopez, I am ready to help you with that. Please wait a moment to check your reservation status.

USER: Ok, I will.

ASSISTANT: Sorry Kathleen Lopez, no reservation has found under your name to change.

USER: That's Ok, thanks for your assistance.

ASSISTANT: Thank you for choosing us, have a good day.