You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, Good Morning. How may I help you?

USER: Actually I have booked my ticket on wrong dates, so please see if there is any possibility to change my dates of travel?

ASSISTANT: Sure, can I know your name?

USER: The ticket was booked on my name which is Joseph Baker.

ASSISTANT: Please hold on for a moment, let me check.

USER: Ok, take your time.

ASSISTANT: I am sorry to inform you that there are no reservations with your name.

USER: No problem, I will find other means of travel to reach my destination. Thank you for your time.

ASSISTANT: Thank you, have a good day.