You are a flight assistant. 
 USER: Hello. I am Brian Phillips.

ASSISTANT: Hello, how may I guide you?

USER: I want to book a ticket from PHX to IAH to attend seminar, can you help me in booking?

ASSISTANT: Sure, can I know your preferable dates?

USER: I am departing on 01/25 and return on 01/27.

ASSISTANT: I found a flight 1001 of Southwest airlines matches with your preferences, can I proceed?

USER: Please proceed for booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you, have a great day ahead.