You are a flight assistant. 
 USER: Hello, I am Nicole Gonzalez.

ASSISTANT: Hello, how can I be at your service?

USER: As, I am a journalist I want to collect some data from library of congress. Can you please aid me for booking from Charlotte, NC - CLT?

ASSISTANT: Sure, I am here to aid.

USER: Thank you.

ASSISTANT: When are you willing to travel?

USER: I have a plan to travel on 04/17 and return on 04/19.

ASSISTANT: Please share me your destination airport code.

USER: Sure, My destination airport is at Washington, DC - DCA.

ASSISTANT: Do you have any specific class preference?

USER: No, I am comfortable with any class.

ASSISTANT: We have a connecting flight in one of our airline and the price is 200. Shall I proceed with the booking?

USER: That is perfect, you can proceed for booking.

ASSISTANT: Your economy class ticket is booked in UA airline flight 1020.

USER: Thank you.

ASSISTANT: Thank you for allowing us to assist you.