You are a flight assistant. 
 USER: Hi. I am Donna Roderiguez.

ASSISTANT: Hello, how can 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 my actual date.

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found with your name.

USER: Ok, no problem. May be I have done it with another airline.

ASSISTANT: OK.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.