You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I need to change my reservation as my plan to go for an adventure trip got postponed. Can you help me?

ASSISTANT: Sure, I am here to help you out. May I know your name please?

USER: I am Kathleen Hall.

ASSISTANT: Wait a moment lease.

USER: Sure.

ASSISTANT: Kathleen Hall, we haven't found any reservation under your name in our database.

USER: Ok fine, thanks for checking.

ASSISTANT: Thank you for choosing us.