You are a flight assistant. 
 USER: Hello, I am Anna Harris.

ASSISTANT: Hello. How can I assist you?

USER: I would like to go to Space Needle in Seattle, so could you please book a flight ticket to Seattle?

ASSISTANT: Sure, I will help you for booking. Can you please provide me your travelling dates?

USER: Sure, I would like to move on 03/20 and get return back on 03/22.

ASSISTANT: Ok, may I know your airport codes?

USER: My source and destination airport codes are SEA and SEA.

ASSISTANT: Ok, give me a moment.

USER: Ok, but ensure it is a single connecting flight.

ASSISTANT: Yes, I found a flight for you with single connection. Shall I proceed for booking?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket is booked with flight number 1021 and airline is Southwest.

USER: Thank you for booking.

ASSISTANT: Welcome. Have a safe flight.