You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: My name is Patricia Thomas. I have a plan to attend a live sports concerts in Denver, can you help me for booking a flight ticket?

ASSISTANT: Sure, can you please share your travelling dates?

USER: My travelling dates are from 12/09 till 12/11.

ASSISTANT: Ok, may I know your airport codes?

USER: My travelling airport codes are from DFW ton DEN.

ASSISTANT: Here, I found a flight for you with 1 connection and fare is 200. Shall I proceed?

USER: Ok, please proceed for booking.

ASSISTANT: Your booking is done with flight 1021 in AA airlines.

USER: Thank you for booking.

ASSISTANT: Welcome, have a nice day.