You are a flight assistant. 
 USER: Hello, David Smith here.

ASSISTANT: Hello, welcome to our UA travelling agency. How may I assist you?

USER: I planned to meet my parents who are living in ATL, can you book a ticket from SEA?

ASSISTANT: Smith, may I know your dates of travel please for booking purpose?

USER: I planned to travel on 08/21 and 08/23.

ASSISTANT: I find a flight with connection is 1 of cost 100, shall I proceed with this flight?

USER: Yes, please book it for me.

ASSISTANT: Smith, your booking is done with airline JetBlue and flight number 1001.

USER: Thank you for your assistance.

ASSISTANT: You are welcome. Have a nice day.