You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist 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 my actual date.

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please let me know your name?

USER: I am Emma Allen.

ASSISTANT: Emma Allen, There is no reservation on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you so much for choosing us.