You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, may I know your good name?

USER: My name is Jennifer Jackson.

ASSISTANT: Please wait for a moment.

USER: Ok, take your time.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: Not an issue, thank you for the information.

ASSISTANT: Thank you for reaching us.