You are a flight assistant. 
 USER: Hello, I am Gary Clark.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to go for an occasion in Seattle, can you please help me to book a flight ticket?

ASSISTANT: Sure, Could you please provide your journey details?

USER: My price limit is 500. My travelling dates are 03/27 to 03/29.

ASSISTANT: May I know your airport codes?

USER: My journey points are AZ - PHX to WA - SEA.

ASSISTANT: Ok, please wait a moment I will check the availability and get back to you.

USER: Ok.

ASSISTANT: We found a flight with UA airlines of 1020 flight. And price limit is 100 with no connections. Shall I proceed for booking?

USER: Ok, you can proceed with the booking.

ASSISTANT: Booking your ticket has been confirmed.

USER: Thanks for your service.

ASSISTANT: Thank you, have a safe journey.

USER: Thank you.