You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Stephen Young.

ASSISTANT: How can I assist you?

USER: I need to reach Denver to participate in drawing competition so please help me with booking of flight ticket.

ASSISTANT: Sure Young, can I know the travel dates please?

USER: Sure, I have planned my travel dates as 12/26 and 12/28.

ASSISTANT: Can you share the airport codes please?

USER: Sure, I would like to travel from DFW to DEN.

ASSISTANT: Ok, wait a moment please.

USER: Sure, I will wait for your response.

ASSISTANT: There is a flight with number 1027 in Southwest airline, shall I book it?

USER: That's fine, please proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: You are welcome.