You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Mark White here.

ASSISTANT: Mark White, how can I assist you?

USER: Can you book a flight ticket for my airport codes that is from DFW to IAH?

ASSISTANT: Sure, please provide your trip dates.

USER: The travel dates are from 11 Mar to 13 Mar.

ASSISTANT: Do you have any specifications?

USER: I need a single connecting flight.

ASSISTANT: At what time do you want to travel?

USER: The return time would be afternoon.

ASSISTANT: Do you have any other preferences?

USER: That is it.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: Spirit airlines with flight 1009 is providing service with a connecting flight and ticket costs you 100 in economy class.

USER: I am fine with the fare and airlines. You can book it.

ASSISTANT: Your ticket is confirmed. Flight departs at 6:00 AM and returns at 14:00 PM.

USER: Thank you.

ASSISTANT: Thank you for choosing us.