You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kevin Nelson.

ASSISTANT: How may I help you today?

USER: I am heading to Denver,CO-DEN to take a single-rider ATV into the Sonora desert and test my marksmanship skills.

ASSISTANT: Sure, I will be blissful to aid you.

USER: Could you please help me in booking a ticket with fare of 500?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: Could you please mention your planned dates?

USER: My travelling dates are 09/27 and return on 09/29.

ASSISTANT: May I know your source code please?

USER: My starting point is Oakland OAK.

ASSISTANT: Do you have any other requirements?

USER: I need a halt in between the journey.

ASSISTANT: There is an airline called UA of flight 1008 and price is 300 with single connection which matches your given dates.

USER: You can proceed with booking.

ASSISTANT: Your seat has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.