You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, please share me your name?

USER: I am Dennis Lopez. owing to an emergency, I want to change my existing reservation.

ASSISTANT: Sure, give me a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, Please share me your travelling details?

USER: My journey dates are from 06/07 to 06/09. And my airport codes are, MCO and EWR.

ASSISTANT: Please wait for a second.

USER: Ok.

ASSISTANT: Thanks for waiting, there is a flight with single connection.

USER: Ok.

ASSISTANT: AA airline, flight number 1012 with price of 100.

USER: Confirm my reservation with his airline.

ASSISTANT: Your booking has been confirmed.

USER: Thanks for your great response.

ASSISTANT: Thanks for connecting with us, have a safe journey.