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

ASSISTANT: Hello, how can I assist you?

USER: I want to book a flight from Washington with the fare of 500. Can you please help me with this?

ASSISTANT: Sure. Let me know your airport codes.

USER: My origin is from IAD and destination is to SEA.

ASSISTANT: May I know your journey dates?

USER: My travelling dates are from 05/24 to 05/26.

ASSISTANT: Ok, please standby.

USER: Sure.

ASSISTANT: Thanks fro providing your details. You have 1019 flight with Spirit airline of price 100 with 1 connection. Shall I reserve your ticket?

USER: You may proceed.

ASSISTANT: Ok, your ticket has reserved.

USER: Thank you for your assistance.

ASSISTANT: Thank you for opting us.