You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you help me to book a flight ticket from DEN to DFW?

ASSISTANT: Sure, may I know your name?

USER: I am Christine Allen.

ASSISTANT: Can I know your trip dates?

USER: My travel dates are Apr 16 and Apr 18.

ASSISTANT: Can I know your connection limit?

USER: I prefer connecting flight for this trip.

ASSISTANT: May I know your other preferences?

USER: I would like to prefer normal cost airline.

ASSISTANT: We found a flight of American airline, flight number 1014 with the fare of 100.

USER: Please proceed to book my flight ticket in this airlines.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for choosing us.