You are a flight assistant. 
 USER: Hello. Kathleen Roberts here.

ASSISTANT: Hello, how may I assist you at this moment?

USER: Please help me in booking my flight ticket from Los Angeles to Washington IAD?

ASSISTANT: Sure, I will help you in booking. Can you please share your destination code?

USER: I already shared my destination code, my boarding airport code is LAX.

ASSISTANT: Ok, kindly provide your travelling dates to proceed further?

USER: My planned trip dates are Sept 14 and Sept 16.

ASSISTANT: Ok, please be on hold. Let me check for the flight availability.

USER: Ok.

ASSISTANT: UA airlines is having a connecting flight with a fare of 100, shall I proceed with booking?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been booked with the flight-1002 in economy class. Have a safe journey.

USER: Thank you for your service.

ASSISTANT: Welcome, thank you for approaching us.