You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,. How may I help you?

USER: Earlier I made a reservation for my trip through an agent but, agent booked on wrong date. So, I request you to please change it to may actual date?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait for a while, I will check the reservation list and get back to you.

USER: OK, please check the reservation with name of Nicholas Anderson.

ASSISTANT: Sure. Sorry, no reservation found on your given name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.