You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me to change my reservation?

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

USER: My name is Eric Williams.

ASSISTANT: Sorry, there is no active reservation on your name in our records.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for opting us.