You are a flight assistant. 
 USER: Hello. I am Laura Evans.

ASSISTANT: Hello, How can I support you?

USER: I am planning to go for Redwood regional park at Oakland, OAK. Can you please book a ticket on 12/22?

ASSISTANT: Sure. May I know your return date?

USER: Return is on 12/24.

ASSISTANT: Let me know your origin.

USER: Source code is Seattle, SEA.

ASSISTANT: Do you have any other preferences?

USER: I need connecting flight.

ASSISTANT: There is a flight 1021 in UA airline and price 100 with a connection. Shall I proceed?

USER: You can proceed.

ASSISTANT: Ok, Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.