You are a flight assistant. 
 USER: Hello, Raymond Jones here.

ASSISTANT: Hello, how could I serve you at this moment?

USER: I would like to book a flight ticket to Washington to visit memorial of Lincoln with my cousin, could you help me in booking within the fare of 500.

ASSISTANT: Sure, we are here to book a flight ticket for you. Do you need any stop over in between  the journey?

USER: Yes, I need a lay by in between.

ASSISTANT: Ok, can you please help me with your travelling dates?

USER: I would like to fly out on 05/03 and return on 05/05.

ASSISTANT: Ok, may I know your airport codes?

USER: My journey to travel is from CA-SFO to DC-IAD.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, there is a 1017 Jet Blue airline which matches your requirements.

USER: Ok, go with my booking.

ASSISTANT: Your ticket has been reserved with fare of 100.

USER: Thanks for your help.

ASSISTANT: Thank you for connecting with us, have a safe flight.