You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: To attend a art and crafts festival at Denver from Washington, DC - DCA. Can you help me book a flight ticket?

ASSISTANT: Sure, I will help you in booking. May I know your travelling dates?

USER: I intend to travel on 07/07 and return on 07/09.

ASSISTANT: May I know your destination code?

USER: I need to reach DEN.

ASSISTANT: Please mention your price limit?

USER: I can afford up-to 1000.

ASSISTANT: There is a Spirit 1012 airline which matches your requirements. Shall I proceed with booking with 1 connection?

USER: You can proceed for booking.

ASSISTANT: Please provide your name for booking.

USER: I am Margaret Clark.

ASSISTANT: Your booking has been confirmed on 1012 airline with name of Margaret Clark.

USER: Thank you for your assistance.

ASSISTANT: Thank you for approaching us.