You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I guide you?

USER: I have reserved my flight ticket with wrong details, can you please change my existing reservation?

ASSISTANT: Sure, may I know your name please?

USER: I have reserved my flight ticket with Richard Smith name.

ASSISTANT: Ok, there is no reservation with your name to change further.

USER: Ok, thank you for your help.

ASSISTANT: Thank you.