You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you please change my existing reservation?

ASSISTANT: Sure, may I know your name?

USER: My name is Deborah Jones.

ASSISTANT: We found a reservation on your name. Can you please share your travelling dates?

USER: My travelling dates are Nov 10 and Nov 12.

ASSISTANT: Please share your airport codes.

USER: My airport codes are LAS and ATL.

ASSISTANT: Do you want connecting flight or direct flight?

USER: I need a single connection flight.

ASSISTANT: Let me know your class preference.

USER: My class preference is economy.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: We found a connecting flight with Southwest airlines and flight number is 1022. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been confirmed with economy class.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.