You are a flight assistant. 
 USER: Hi, I am Jacob Taylor.

ASSISTANT: Hello, How can I serve you today?

USER: I need book a flight ticket under 500. Can you help me?

ASSISTANT: Sure, I am here to help you. Can you please provide your planned travelling dates?

USER: I would start on 06/01 and return on 06/03.

ASSISTANT: Ok, Mention your airport codes of travelling?

USER: My boarding point is SEA and landing is at DCA.

ASSISTANT: There is a 1004 Hawaiian airline with price 200. Can I proceed with booking?

USER: Ok, please proceed with this booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for your prompt service.

ASSISTANT: Thank you for reaching us.