You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you today?

USER: I need to change my reservation, can you please help me with changing reservation?

ASSISTANT: Sure, may I know your good name?

USER: Betty Carter is my name.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you for opting us.