You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: David Clark here.

ASSISTANT: How may I aid you today Clark?

USER: I want to attend a Seminar in Philadelphia. Can you please help me for booking the flight ticket?

ASSISTANT: Can you please mention your nearest airport codes, which you are travelling?

USER: My airport codes are from OAK to PHL.

ASSISTANT: David, can you please mention your trip dates, so I can proceed further checking.

USER: My travelling dates are from 01/25 to 01/27.

ASSISTANT: Please wait a moment.

USER: Ok, I will wait.

ASSISTANT: There is a flight with one connection and the price is 200, can I proceed further?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Your ticket has been booked in Hawaiian airlines and the flight number is 1005.

USER: Thanks for helping me.

ASSISTANT: Thank you for reaching our service. Have a wonderful journey ahead.