You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Amy Jackson, I had a to go to Denver, DEN, to do project. So please help me to book a flight ticket from DEN.

ASSISTANT: Sure, let me know your travelling dates?

USER: The departure date is 01/19 and the arrival date is 01/21.

ASSISTANT: I have found a flight 1004 of Southwest airlines, can I proceed?

USER: Please let me know the connection limit?

ASSISTANT: It is 1.

USER: Ok, then book my ticket.

ASSISTANT: Your ticket has been booked, have a happy journey.

USER: Thank you for helping me.

ASSISTANT: Welcome.