You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jonathan Lee.

ASSISTANT: Lee, how can I assist you?

USER: I want to celebrate my dad's birthday, he stays in SEA. Can you book a ticket from my city DCA?

ASSISTANT: Convey my wishes to your dad.

USER: Sure.

ASSISTANT: Sure, I can book your ticket. Please mention your dates of travel.

USER: My planning dates are from 10/29 to 10/31.

ASSISTANT: Please wait for a moment.

USER: I want a flight with a price of 200.

ASSISTANT: Flight number 1000 of JetBlue airlines is matching with your requirements.

USER: Confirm my ticket.

ASSISTANT: Your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.