You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your good name?

USER: I am Thomas Robinson.

ASSISTANT: How may I aid you today?

USER: Can you book a flight to IAD? Because every year, I will go to Seasonal festivals.

ASSISTANT: Sure, may I know your origin airport code?

USER: DCA is my origin point.

ASSISTANT: Please provide your travelling days?

USER: 11/07,11/09 seasonal festival is for two days only.

ASSISTANT: Please give a moment, I will  check the flights availability and revert you.

USER: I can spend 5000 for any airline. Ok, I will wait.

ASSISTANT: We found a flight 1005 in south west airlines and with single connection.

USER: Ok.

ASSISTANT: Your ticket has been confirmed with price 100.

USER: Ok, Thanks for your confirmation.

ASSISTANT: Thank you for availing with us.