You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to book a ticket from DCA to PHX to attend Innovation festival to share my ideas.

ASSISTANT: Sure, I am here to help you. Can you please let me know your travelling dates?

USER: My trip dates are 10/27 and 10/29.

ASSISTANT: Do you have any other specifications?

USER: I need break in my journey.

ASSISTANT: May I know your good name?

USER: Rachel Carter here.

ASSISTANT: Sorry, no flights are available on your journey routes.

USER: No problem, thanks for the information.

ASSISTANT: Thank you for choosing us.