You are a flight assistant. 
 USER: Hi. Emma Carter here.

ASSISTANT: Hello. How can I assist you today?

USER: I need a flight ticket to Denver. Can you book it?

ASSISTANT: Sure, will you mention the preferable airport codes that you want to travel?

USER:  I want to start from Chicago and my airport codes would be PHX to DEN.

ASSISTANT: Please provide your travelling dates.

USER: Ok , my travel dates would be from 01/27 to 01/29.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: There is a flight with price 100 and the connections 1 is available.

USER: Yes, you can book it.

ASSISTANT: Your ticket is booked. The flight number is 1000 and the airline is Hawaiian.

USER: Thank you.

ASSISTANT: Welcome, have a great day.