You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I would like to change my flight reservation as my trip got postponed, can you please help me?

ASSISTANT: Sure, please provide me your name.

USER: My name is Stephanie Martinez.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: We didn't find any reservation on your name.

USER: Ok, thank you for the information.

ASSISTANT: Thank you.