You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I'm Emily Clark, I want to re modify an existing reservevation.

ASSISTANT: Sure Emily, let me check for your reservation status.

USER: Sure, take your time.

ASSISTANT: Emily, I have found a reservation by your name. Provide me your new travel dates.

USER: Well, I'm planning to start my journey on 08/19 and fly back on 05/21.

ASSISTANT: Ok, can you provide me your source and destination airport codes? Please provide me your travel dates correctly.

USER: Sure, I want to depart on 08/19 and return on 08/21.

ASSISTANT: Ok, can I know your source and destination airport codes?

USER: Sure, my new reservation departs from Minneapolis & St. Paul, MN - MSP and return back from Orlando, FL - MCO.

ASSISTANT: Please wait for a moment, I will check for the best available flights to MCO.

USER: Sure.

ASSISTANT: Thank you for waiting, there is one flight available from Southwest airlines with 1 connection, shall I proceed for booking your ticket?

USER: Ok, please proceed the booking.

ASSISTANT: Your ticket is confirmed successfully with the flight number 1012.

USER: Thank you for the support.

ASSISTANT: Thank you for choosing us, have a great flight.