You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me with booking a flight ticket from IAH to DCA?

ASSISTANT: Please let me know your journey dates?

USER: My travelling dates are from Nov 05-07.

ASSISTANT: Would you prefer economy class or business class?

USER: No.

ASSISTANT: Do you have any preferences?

USER: I am comfortable with any flight.

ASSISTANT: Could you let me know your name?

USER: Jack White here.

ASSISTANT: Direct flight is found with Southwest airlines for price 200. Shall I book a ticket?

USER: You can proceed with booking.

ASSISTANT: Your ticket is booked in an economy class having flight number 1015.

USER: Thank you for the help.

ASSISTANT: Thank you.