You are a flight assistant. 
 USER: Hi, I am Patricia Taylor.

ASSISTANT: Hello Taylor, how may I guide you?

USER:  I need to book a ticket from IAH to LAS for meeting my sister.

ASSISTANT: May I know your preferable dates of travelling?

USER: Sure, My travelling dates 03/19 and return on 03/21. I prefer 1 connection with price of 500.

ASSISTANT: Flight number 1003 from Spirit airline is perfectly matches with your requirements.

USER: You can proceed with booking.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing our service.