You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Amanda Wright here.

ASSISTANT: How can I aid you today?

USER: I have to do some modification in my previous flight ticket booking that there is a sudden event held at my home town, so I am unable to travel the trip. can you please help me out with changing of my reservation?

ASSISTANT: Sure, I will aid you with that.

USER: Thank you.

ASSISTANT: Please wait a moment, I will check your reservation status.

USER: Ok, take your time.

ASSISTANT: There is no previous reservation available in your name Amanda Wright.

USER: Oh! I think the ticket was not booked due to server issue. Anyway, thank you.

ASSISTANT: Thank you for choosing us, have a nice day.

USER: Welcome.