You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,how can I assist you?

USER: I am Emma Wilson. I want to book a flight ticket to attend a beer festival at CA-OAK on 06/26.Can you help me?

ASSISTANT: Sure, please provide your return journey date.

USER: 06/28 will be my return.

ASSISTANT: Please provide your origin airport code.

USER: PA-PHL will be my boarding airport code.

ASSISTANT: Please provide your specifications.

USER: I need a connecting flight.

ASSISTANT: UA airlines with single connection and price is 200 of 1002 flight. Shall I proceed for booking?

USER: You can proceed it for booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your response.

ASSISTANT: Thank you.