You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Please book me a ticket from LAS to IAH to meet my family.

ASSISTANT: Sure, will you mention your travelling dates please?

USER: I have planned to travel on Aug 14th and return on Aug 16th.

ASSISTANT: Do you have any specifications?

USER: I like connecting flight.

ASSISTANT: Do you have any other preferences?

USER: No, I don't want any other specifications.

ASSISTANT: Please mention your name.

USER: Myself Dennis Anderson.

ASSISTANT: The Spirit airline is providing an economy class flight with price 100 and the connections 0. Shall I confirm your ticket?

USER: Ok, please book this ticket.

ASSISTANT: Your ticket is booked. The flight number is 1000.

USER: Thank you so much.

ASSISTANT: Welcome, have a great day.