You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to visit a NASA space center in Houston, so please book a flight ticket from DFW to IAH.

ASSISTANT: Sure, I can help you with that. May I know on which dates are you planning to depart and arrive?

USER: I will start on Sept 18, return on Sept 20.

ASSISTANT: Do you prefer stopover in between your journey?

USER: Yes, I need a single connecting flight.

ASSISTANT: Please let me know if you have any other specifications.

USER: I do not have any other specifications.

ASSISTANT: May I know your good name please?

USER: My name is David Wright.

ASSISTANT: Frontier airlines is providing a single connected flight with ticket fare of 100, shall I proceed for booking?

USER: Ok, proceed to booking.

ASSISTANT: I have successfully booked you an economy class ticket in flight-1010, have a safe journey.

USER: Thank you.

ASSISTANT: Thank you for choosing us.