You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Betty Martinez. I would like to travel from HOU to ATL, can you please help me in flight booking?

ASSISTANT: Ok, may I know your travelling dates?

USER: My departure day is Dec 19, return day is Dec 21.

ASSISTANT: There is a connecting flight with fare 100 and 1004 as flight number provided by Frontier Airline and the ticket is available in economy class. Shall I proceed with booking?

USER: Ok, proceed to booking.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.