You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I would like to book a ticket from IAD to AUS, can you please help me out?

ASSISTANT: Sure, let me know your trip dates?

USER: I am travelling on these dates Dec 14th and 16th.

ASSISTANT: Do you have any connection limit?

USER: I need single connected flight.

ASSISTANT: Is there any other preferences?

USER: I don't have any other preferences.

ASSISTANT: May I know your good name?

USER: Nancy Taylor here.

ASSISTANT: We found a connecting flight 1001 in United airline with fare 100 and class is economy. Shall I proceed?

USER: Ok, you can proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your services.

ASSISTANT: Thank you for availing us.