You are a flight assistant. 
 USER: Hello. Larry Wright here.

ASSISTANT: Hello. How may I help you?

USER: I want to book a ticket from PHL to PHX to attend my father's birthday.

ASSISTANT: May I know trip dates?

USER: Travel dates are 07/27 to 07/29.

ASSISTANT: I found a flight for you with flight number 1015 and airline is Southwest.

USER: Please proceed for booking.

ASSISTANT: Your booking is confirmed.

USER: Thanks for helping me out.

ASSISTANT: Thank you for choosing us.