You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I am planning to visit Houston, can you please book me a ticket from PHX to IAH?

ASSISTANT: Sure, when are you planning to travel?

USER: My preferable journey dates are Sept 16 and Sept 18.

ASSISTANT: How many connections do you need?

USER: I prefer connecting flight.

ASSISTANT: Is there any other requirements?

USER: I prefer normal cost airlines.

ASSISTANT: May I know your name?

USER: My name is Richard Miller.

ASSISTANT: Ok Richard Miller, there is a Spirit airline with flight number 1007 available for you matching all your credentials and the fare is 200. Is that fine?

USER: Please reserve my ticket in this flight.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for choosing us.