You are a flight assistant. 
 USER: Hello, I am Kathleen Campbell.

ASSISTANT: Hello, how may I help you?

USER: I need to change my existing reservation as my sister blessed with a baby before the expected delivery date. Can you please help me with that?

ASSISTANT: Sure, I am here to help you. Please wait a minute.

USER: Ok.

ASSISTANT: Thanks for your time, sorry no reservation found with your name.

USER: Ok, no issues.

ASSISTANT: Thank you for availing us, have a nice day.

USER: Thanks for your information.