You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to book a ticket from DFW to HOU, can you help me?

ASSISTANT: Sure, help me with the travelling dates.

USER: My travel dates are 03/21 and 03/23.

ASSISTANT: May I know your name?

USER: Myself James Lee.

ASSISTANT: There is a flight with fare 100 in airline UA.

USER: You can book it.

ASSISTANT: Your ticket is booked in flight number 1006.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.