You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jack Williams.

ASSISTANT: Williams, how can I help you today?

USER: I am planning to meet my school friend at New York, JFK. Please help me in ticket booking from OAK to JFK.

ASSISTANT: That's great to hear. Can I know your trip dates?

USER: I am planning to travel on 04/19 and 04/21.

ASSISTANT: The flight 1005 of Southwest airlines is available on your requested dates. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket is booked successfully.

USER: Thanks a lot for booking.

ASSISTANT: You are welcome.