You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am Brian Martinez, can you help me to book a flight?

ASSISTANT: Sure, can you please provide your travelling dates?

USER: Yes sure. My travelling dates are 12/31 and 01/02.

ASSISTANT: May I know your airport codes?

USER: I would like to visit Chicago ORD from my location SEA.

ASSISTANT: There is a flight available with price 100 and flight number is 1027, would you like to proceed with the booking?

USER: Please proceed.

ASSISTANT: Your booking is confirmed.

USER: Thank you for your help.

ASSISTANT: You are welcome.