You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I have to go Chicago in this month for a business meeting purpose, can you please book a flight ticket from Houston?

ASSISTANT: Sure, may I know your journey dates please?

USER: Thanks, my departure date is 11/16 and please book my return ticket also on 11/18.

ASSISTANT: Can you please let me know your airport codes?

USER: I want to fly from HOU airport and destination airport is ORD.

ASSISTANT: May I know your name please?

USER: Sure, my name is Larry Taylor.

ASSISTANT: I found a flight with Frontier airlines available with price 100. Shall I book the ticket for you?

USER: Please confirm this flight ticket for me.

ASSISTANT: Your ticket is confirmed and the flight number is 1019.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.