You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I provide assistance to you today?

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 am here to help you.

USER: Thank you.

ASSISTANT: Can I know your name to check further?

USER: My name is Samantha Lee.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Sorry, no reservation has been found with your name in our records.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for reaching us.