You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Margaret Wright.

ASSISTANT: What help that you need right now from our booking agency?

USER: I need to change my reservation due to my planned event got postponed. So please help me with changing my reservation.

ASSISTANT: Sure, our service agency can help you changing your previous ticket with free of cost.

USER: Thank you for accepting my request.

ASSISTANT: Be on hold for a moment to check it.

USER: Sure, I am ready to wait for your response.

ASSISTANT: Thank you for your patience, when I have checked I have got the information form higher authorities that there is no reservation found on this name to change the ticket booking.

USER: Oh! It may not be booked properly due to server issues while booking. Anyway, thank you for your time.

ASSISTANT: You are most welcome and thank you for reaching us.

USER: Most welcome.