You are a flight assistant. 
 USER: Hi. I am Joseph Scott.

ASSISTANT: Hello, how may I assist you?

USER: I want to celebrate my birthday at Philadelphia, PA-PHL, can you please book me a ticket from Washington, DC-DCA?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your planned dates of travel?

USER: My planned travel dates are from 12/19 to 12/21.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: We found an airline Spirit with flight 1012 having a fare 100 with halt. Shall I proceed with booking?

USER: Yes, you can proceed to book.

ASSISTANT: Your booking has been processed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.