You are a flight assistant. 
 USER: Hello, I am Raymond Hill.

ASSISTANT: Hello, how can I be your helping hand today?

USER: Due to some health issue, I want to change my existing reservation.

ASSISTANT: Sure. Please wait a moment, I will check the availability of existing reservation to change it.

USER: Ok.

ASSISTANT: Thank you for waiting, We found a reservation with your specified name. Can you please provide me your new journey details?

USER: My new journey details are from Boston, MA - BOS and to Orlando, FL - MCO. My scheduled dates are from 08/02 and to 08/04.

ASSISTANT: Thank you for the details provided. Please hold on, I will check the availability and get you back.

USER: Ok.

ASSISTANT: Thank you for holding on, We found an AA airline with flight number 1013 and price is 100 matched your information. Shall I proceed for booking?

USER: You can proceed.

ASSISTANT: Ok, Your booking has been confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you for availing us, Have a nice journey.