You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Anna Lee.

ASSISTANT: How may I help you today?

USER: I am planning to visit Oakland, can you please book me a ticket from PHL to OAK?

ASSISTANT: When you are willing to depart and arrive?

USER: My preferable journey dates are from May 29 to May 31.

ASSISTANT: Do you have any other specifications?

USER: I need connecting flight on this journey.

ASSISTANT: There is an airline called Southwest of flight 1002 and price is 100 in an economy class. Can I confirm your booking?

USER: Please book my ticket in this airlines.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you.