You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I provide assistance to you?

USER: Can you help me to change my reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your good name?

USER: My name is Carolyn Rodriguez.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there is no active reservation found on your name to change.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for approaching us.