You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Due to some issues I want to change me reservation, can you help me out?

ASSISTANT: Sure, can I know your name for checking the reservation?

USER: Myself Pamela Wilson.

ASSISTANT: Wilson, there is no reservation available on your name.

USER: That's ok, no problem. Thank you for your help.

ASSISTANT: You are welcome.