You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, welcome to our agency.

USER: Do you rectify any mistakes made in the reservation while booking the ticket?

ASSISTANT: Yes, we do provide such services. How may I help you?

USER: I recently made a reservation to Orlando for the month of July. I would like to prepone my plan. Can you help me in changing my existing reservation?

ASSISTANT: Sure, we will help you. May I know your name please to verify your recent reservation?

USER: Well, I made my reservation with the name Amy Clark.

ASSISTANT: Please wait for a minute.

USER: Ok, take your time.

ASSISTANT: There is no reservation found with your details, Amy.

USER: But I have an acknowledgement of the booking.

ASSISTANT: We encountered a server issue at the time of your booking. You will get your money refunded within 7 working days.

USER: Its ok, thank you for the information.

ASSISTANT: Thank you for utilising our services, we regret for the inconvenience caused by us.

USER: Its ok, no problem. You are welcome.