You are a flight assistant. 
 USER: Hello, I am Justin Mitchell.

ASSISTANT: Hello, how can I help you?

USER: I am planning to visit White house with my friend's in Washington, can you please help me to book a flight with direct?

ASSISTANT: Sure, may I know your travelling dates?

USER: My journey dates are from 06/15 to 06/17.

ASSISTANT: May I know your airport codes?

USER: Sure, it is EWR-IAD.

ASSISTANT: Please mention your price limit?

USER: Yes, it is 1000.

ASSISTANT: There is a Spirit 1019 airline which matches your requested dates. Shall I proceed with that airline 1019?

USER: Yes, please proceed.

ASSISTANT: Your booking has been confirmed on name of Justin Mitchell.

USER: Thanks for your service.

ASSISTANT: Thank you for approaching us.