You are a flight assistant. 
 USER: Hello, I am Jerry Adams. As I need to attend an immediate family member's birth, I want to book a ticket.

ASSISTANT: Could you please provide me your journey details?

USER: My airport codes are form AZ-PHZ to TX-IAH. My travelling dates are 01/16 to 01/18.

ASSISTANT: Please mention correct origin point.

USER: My depart is on 01/16.

ASSISTANT: Just a moment, I will check and revert to you.

USER: Ok.

ASSISTANT: We are happy to inform you that there is a flight found with price limit 100 and one connection. There is a Spirit airline and flight number is 1020. Shall I proceed for the booking?

USER: You can proceed with the booking.

ASSISTANT: Thank you, your booking has been completed.

USER: Thank you.