You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I need to book a flight from JFK to HOU to enjoy music festivals. Can you help me in booking a flight ticket?

ASSISTANT: Sure, please share your journey dates?

USER: Sure, my journey dates are Apr 19 and Apr 21.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: Is there any class preferences?

USER: No.

ASSISTANT: We found a direct flight in Frontier airlines, flight number is 1015 with price is 200 economy class. Shall I proceed?

USER: Yes, you can.

ASSISTANT: May I know your good name?

USER: Sure, David Parker here.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your kind service.

ASSISTANT: Thank you for choosing us.