You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to change my reservation as I have booked my ticket with wrong dates, please help me out.

ASSISTANT: Sure, I am here to help you with that. Can you please tell me your name?

USER: Jessica White here.

ASSISTANT: Please hold on for a while.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: Thank you for reaching us, have a nice day.