You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I aid you?

USER: I am Linda Thomas. I would like to attend Global Environmental Conference in Benaroya hall, which is at Seattle, WA - SEA. Can you book a flight ticket with price of 500?

ASSISTANT: Sure, can I have your planned dates please?

USER: I will board on 02/02 and return on 02/04.

ASSISTANT: Please let me know your origin please.

USER: My boarding airport is from Oakland, CA - OAK.

ASSISTANT: There is a connecting flight with price 100, flight number is 1006. Would you like me to book?

USER: Yes, proceed.

ASSISTANT: Your ticket has been confirmed with UA airlines.

USER: Thanks for assisting me.

ASSISTANT: Have a good day.