You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I want to modify my reservation. can you help me out in this?

ASSISTANT: Sure, I can help you. May I know your name please for checking your reservation status?

USER: Myself Stephaie Carter.

ASSISTANT: Carter, please wait for sometime.

USER: Ok.

ASSISTANT: Sorry Carter, I have not found any reservation by your name.

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

ASSISTANT: Thank you for choosing us and have a nice day.