You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Kathleen Smith this side, I want to do some changes in my ticket. Can you help me?

ASSISTANT: Sure, I will help you out.

USER: Take your time.

ASSISTANT: Please wait a moment, let me check the reservation details on your name. Sorry Smith, no reservation found on your name.

USER: Ok, no issues, thank you for checking.

ASSISTANT: Welcome.