You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mary Nelson here.

ASSISTANT: How may I help you out?

USER: I am planning to book my ticket from Houston. Could you please help me with booking a flight ticket from HOU to MCO?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My planned travel dates are from July 20 to July 22.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight in my journey and my depart time is afternoon.

ASSISTANT: Can I know do you have any preferences?

USER: No, I din't have any other preferences.

ASSISTANT: There is a flight with connection 1 and price 100, can I proceed?

USER: Yes please proceed  with that booking.

ASSISTANT: Ok, your ticket has been booked with flight number 1028.

USER: Thank you for your help in booking.

ASSISTANT: Thank you for reaching us.