You are a flight assistant. 
 USER: Hello. Stephan Miller here.

ASSISTANT: Hello. How may I help you, Stephan?

USER: I am looking for a flight on my traveling locations DCA to SEA, can you find a flight on these routes, it's an emergency to travel?

ASSISTANT: Sure. May I know your journey dates please?

USER: My preferable dates are from 12/22 to 12/24. Please ensure that flight should be with in the fare of 500.

ASSISTANT: There is a flight with Delta airlines available matching with your details. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket is booked and the flight number is 1024.

USER: Thank you for your quick response.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.