You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Would it be possible to change my existing reservation which is done by me two days ago?

ASSISTANT: Yes, you can change your reservation.

USER: Thank you.

ASSISTANT: May I know on which name your reservation was made?

USER: I am Carol Allen.

ASSISTANT: Please wait for a moment and let me search your reservation.

USER: Sure, I wait for your response.

ASSISTANT: Thank you for waiting, I found your reservation in our system data. Please share me your airport codes?

USER: My airport codes are HOU to MCO.

ASSISTANT: Please mention on which dates would you like to travel?

USER: I will fly on Sept 15 and recur on Sept 17.

ASSISTANT: Do you want connecting flight or direct flight?

USER: Yes, I need a connecting flight.

ASSISTANT: Please mention do you have any other requirement?

USER: No.

ASSISTANT: Thank you for waiting, I found a direct flight 1022 of airline Spirit, fare is 200 and class is economy. Shall I proceed with booking?

USER: Please proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for visiting us, have a nice journey.