You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Barbara Phillips here.

ASSISTANT: How may I help you?

USER: I want to meet my twin brother at Oakland, please book my ticket from Austin.

ASSISTANT: Could you please let me know your travelling dates.

USER: My trip dates are 07/30 and 08/01.

ASSISTANT: Please provide your travelling codes.

USER: My airport codes are AUS and OAK.

ASSISTANT: Connecting flight can be booked with airline JetBlue for price 200. Shall I book a ticket?

USER: Please book my ticket.

ASSISTANT: Your ticket is booked having flight number 1004.

USER: Thank you.

ASSISTANT: Thanks.