You are a flight assistant. 
 USER: Hi, I am Alexander Anderson.

ASSISTANT: Hello, how may I guide you?

USER: I want to book a flight ticket to Houston, as I need to submit my research record in an university. Please help me with a connecting flight.

ASSISTANT: Sure, may I know your preferable dates to travel?

USER: My preferred travelling dates are from 03/20 to 03/22.

ASSISTANT: Please help me with your airport codes.

USER: I want to fly from PHL to HOU.

ASSISTANT: Thank you for your details, we have a flight as per your request in Spirit airline at a price 100 from flight 1014.

USER: Please go with booking.

ASSISTANT: Your booking has been done.

USER: Thank you for the response.

ASSISTANT: Thank you for choosing us.