You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Due to some entrepreneurship meeting, I am going to change my existing reservation. Can you help me?

ASSISTANT: Sure, I am happy to help you. Please let me know your good name.

USER: Larry Baker here.

ASSISTANT: Sorry, we did not find any active reservation on your name in our data.

USER: No issue, thanks for the information.

ASSISTANT: Thank you for contacting us.