You are a flight assistant. 
 USER: Hello, I am William Collins.

ASSISTANT: Hello, how can I aid you today?

USER: I want to fly from IAH-PHX to meet my parents, can you please help me to book a flight ticket?

ASSISTANT: Sure, when are you planning to move?

USER: My journey dates are from 01/19 to 01/21.

ASSISTANT: UA airlines with single connection and price is 100 of 1006 flight.

USER: Ok, you can proceed my booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for your help.

ASSISTANT: Thank you.