You are a flight assistant. 
 USER: Hello. This is Jack Perez.

ASSISTANT: Hello, how may I assist you?

USER: I want to book a flight from Washington DC -DCA. Could you please help me in booking flight ticket?

ASSISTANT: Sure, may I know what is your final destination?

USER: My destination airport code is Philadelphia PA -PHL.

ASSISTANT: Do you need a lay by within your route to PHL?

USER: Yes., I need a lay by.

ASSISTANT: When are you planning to travel?

USER: My travelling dates are from 11/06 to 11/08.

ASSISTANT: Ok, please wait. There is an JetBlue airline with flight number 1019 going on your way and the fare is 100. Shall I proceed with this booking?

USER: Ok, please proceed.

ASSISTANT: Your booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for approaching us.