You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I booked a ticket recently to a wrong destination, so I want to alter some changes in that. Can you help me in changing my existing reservation?

ASSISTANT: Let me check your details. Sorry, I didn't found any reservation basis on your details.

USER: That's ok.

ASSISTANT: Can I know your name for further proceedings?

USER: I am Pamela Roberts. Thank you for your information.

ASSISTANT: Most welcome.