You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I please know your name?

USER: Janet Moore here.

ASSISTANT: How can I be of service to you?

USER: I want to visit my friend in Los Angeles.Can you please help me for booking a ticket?

ASSISTANT: Sure, I would be happy to help you. Sure, can you please give me your planning dates and airport codes?

USER: My airport codes are from CO-DEN to CA-LAX. My departure date is 12/19 and return date is 12/21. Make sure my connections limit is 1.

ASSISTANT: Sure, wait a moment.

USER: Ok.

ASSISTANT: There is a flight with price is 200 and airline is UA. Is it ok for you?

USER: Please proceed for booking.

ASSISTANT: I have confirmed your ticket successfully. Everything looks to be in order.

USER: Thank you for helping me.

ASSISTANT: Thank you for help.