You are a flight assistant. 
 USER: Hi, I am Angela Robinson.

ASSISTANT: Hello, how can I assist you?

USER: I would like to visit the Crafts festival in Washington to buy different types of crafts. Can you please assist me in booking a flight ticket?

ASSISTANT: Sure, when are you planning to travel?

USER: I would like to start my journey on 07/25 and return on 07/27.

ASSISTANT: Please provide your airport codes.

USER: My source code is CO-DEN and destination code is DC-DCA.

ASSISTANT: Frontier airlines with single connection and price is 200 of 1006 flight. Shall I proceed?

USER: You can continue with booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your assistance.

ASSISTANT: Thank you.