You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: Could you help me to amend my existing reservation?

ASSISTANT: Sure, may I know your good name?

USER: I am Jessica Wilson.

ASSISTANT: Sorry, we found no reservation on your given name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for opting us.