You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I need your help to book a flight ticket from DEN to  HOU. Please help me with it.

ASSISTANT: Sure, may I know your planned trip dates?

USER: April 13 and 15 are my planned travelling dates.

ASSISTANT: Do you have any connection limit?

USER: I need a break in my journey.

ASSISTANT: Let me know your class preference?

USER: I am good to fly in any class.

ASSISTANT: Any other requirements to be met?

USER: Nothing much to state.

ASSISTANT: May I know your name?

USER: My name is Charles Brown.

ASSISTANT: Southwest airlines flight- 1004 of price 100 with connection in economy class matches your given details, shall I proceed?

USER: Please book the ticket.

ASSISTANT: Ok, your flight ticket has been booked.

USER: Thank you very much.

ASSISTANT: Thank you for reaching us.