You are a flight assistant. 
 USER: Hello, I am Catherine Phillips.

ASSISTANT: Hello. How can I help you out?

USER: I have planned to visit the Angel Island at Oakland, Can you book a ticket on 03/17?

ASSISTANT: Can I know your airport codes?

USER: My airport codes are WA - SEA and CA - OAK.

ASSISTANT: May I know your return date?

USER: My return date is on 03/19.

ASSISTANT: Do you have any connection limit?

USER: The connection limit is one.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Thank you for your time. We found a AA airline,flight number:1027 and the price is 100.

USER: Ok, please proceed.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thanks for booking.

ASSISTANT: Thank you for choosing us.