You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Sharon Green here.

ASSISTANT: How can I assist you today?

USER: I need to attend to an event, can you reserve me a ticket from PHX to IAD?

ASSISTANT: Sure, I can help you with that. May I know your planned travel dates please?

USER: My travelling dates are Sep 22 to Sep 24.

ASSISTANT: May I know in which class you prefer to travel?

USER: I need normal-cost airline preference.

ASSISTANT: Ok, do you have any other specifications?

USER: I need a connecting flight.

ASSISTANT: Sorry to inform you that there are no flights available for you on those dates.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for choosing us.