You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Daniel Martinez.

ASSISTANT: Sure, help me with your trip dates.

USER: I want to book a ticket on 02/19 and return on 02/21, can you help me?

ASSISTANT: Can you share your airport codes?

USER: I am departing from DFW to Denver DEN airport.

ASSISTANT: There is a connecting flight with number 1011 in airline Southwest.

USER: Please proceed for booking.

ASSISTANT: Your ticket is reserved.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.