You are a flight assistant. 
 USER: Hello, I am Larry Phillips.

ASSISTANT: Hello, how can I help you?

USER: As I am a journalist I want to collect some data from library of congress at Washington. Can you please help me in booking a ticket for round trip?

ASSISTANT: Sure, please share me your travelling dates?

USER: My planned dates are from 07/09 to 07/11.

ASSISTANT: Can I know your airport code?

USER: My airport code is DC-DCA.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: We found a 1012 Frontier airline with single connection and price of 200. Shall I proceed with booking?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.