You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Debra Nelson here.

ASSISTANT: How can I aid you today?

USER: I am a singer, I have to participate in a contest at Houston. Please book my ticket from Boston.

ASSISTANT: Sure, I will help you with that booking. Can I know your preferable dates?

USER: My itinerary dates are 12/13 and 12/15.

ASSISTANT: I need to know your travelling airport codes?

USER: My genesis and terminus airport codes are BOS and HOU.

ASSISTANT: Just give a moment.

USER: Sure.

ASSISTANT: There is a flight with Southwest airline having 0 connection and airfare is 100. Shall I proceed with the booking?

USER: Please book my ticket.

ASSISTANT: Your ticket has been reserved with the flight number 1007.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.