You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I booked a flight ticket but by mistake I provided the wrong journey dates, can you help me to change my reservation with correct dates?

ASSISTANT: Sure, may I know your good name please?

USER: I am Richard Turner.

ASSISTANT: Thanks for giving your name, there is no reservation on your name.

USER: Ok, thanks for the details.

ASSISTANT: Thanks for choosing us.