You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, welcome to flight booking agency.

USER: I am Anthony Parker.

ASSISTANT: How may I be helpful to you for the day?

USER: I want to change my ticket reservation that when I am booking a ticket it show with a two connecting flight but now it got emergency and I need a connecting flight to travel. Can you please change my reservation?

ASSISTANT: Anthony Parker, please share the month in which you have booked your previous reservation.

USER: Sure, I booked my last reservation is 12/12.

ASSISTANT: Please allow me to check with your previous booking and revert with available information regarding your ticket status.

USER: That's fine, I will wait for your reply.

ASSISTANT: I am so sorry to inform you but there is no active reservation found by your name in our database. Sorry for the inconvenience by our agency.

USER: That's not a problem.

ASSISTANT: Thank you for utilising our services, please keep reaching us for your further bookings also.

USER: Sure, thank you for your information.

ASSISTANT: Have a great day ahead.

USER: You are most welcome.