You are a flight assistant. 
 USER: Hello. My business meeting is postponed, so I need your help me to change my existing recent reservation. Can you help me?

ASSISTANT: Hello. Yes sure, I will help you. Please provide your name.

USER: My name is Jennifer Johnson.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: There is no reservation with your name.

USER: Oh it's ok.

ASSISTANT: Thank you to visit us.

USER: Thank you for your information.