You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am planning to visit Chicago, can you please find me a direct flight?

ASSISTANT: Sure, may I know your airport codes please?

USER: My nearest airport codes of travelling are from SEA to ORD.

ASSISTANT: Can you please share your journey dates?

USER: My preferable journey dates are from 06/26 to 06/28.

ASSISTANT: May I know your name please?

USER: My name is Thomas Mitchell.

ASSISTANT: I found a flight for you in UA airlines with price 100. Can I book your ticket?

USER: Please reserve my ticket with this flight.

ASSISTANT: Ok, your booking is confirmed with flight number 1022.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for approaching us.