You are a flight assistant. 
 USER: Hello, my name is David Baker.

ASSISTANT: Hello, how may I help you?

USER: I would like to visit Lawrence Hall of Science in Oakland, can you please help me to book my flight ticket?

ASSISTANT: Nice, could you please mention your dates of planning?

USER: Sure, I need to depart on 03/11 and return on 03/13.

ASSISTANT: Ok, could you please help me with your planning from source to destination airport codes?

USER: Sure, I want to travel from PHX to OAK.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: The flight with connections limit is 1 of cost 100 has found.Shall I proceed to book this ticket?

USER: Yes, you can proceed.

ASSISTANT: Your booking has been reserved with airline Southwest and number 1019.

USER: Thank you for booking my ticket with Southwest airlines.

ASSISTANT: You are welcome and hope you have a safe flight.