You are a flight assistant. 
 USER: Hi. Kathleen Roberts here.

ASSISTANT: Hello. How may I assist you, Kathleen?

USER: Can you book a connecting flight ticket to Las Vegas for my family vacation?

ASSISTANT: Sure, could you please share your nearest source and destination airport codes?

USER: My airport codes for boarding the flight are DCA to LAS.

ASSISTANT: When would you like to plan your journey?

USER: My preferable dates for travel are 09/14 to 09/16.

ASSISTANT: Please wait a moment, Kathleen.

USER: Sure.

ASSISTANT: Thank you for your patience, I found a flight for you in Hawaiian airlines with price 200. Can I book your ticket?

USER: I am ok with the fare. You can book it.

ASSISTANT: Ok, your booking is confirmed with flight number 1009.

USER: Thank you.

ASSISTANT: Thank you for choosing us.