You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you for the day?

USER: Can you please help me in changing my existing reservation?

ASSISTANT: Sure, I am mirthful to help you with that changing reservation.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Lisa Scott here.

ASSISTANT: Please wait for a while, let me check your previous reservation list.

USER: Sure.

ASSISTANT: Lisa Scott, I have found your previous reservation on your name . Can you please share your preferable airport codes?

USER: My airport codes are DCA - IAD.

ASSISTANT: May I know your new travelling dates, please?

USER: My trip dates are 02/01 - 02/03.

ASSISTANT: Which class do you prefer either economy or business?

USER: I am ok with any class.

ASSISTANT: Can I know your connection limit?

USER: I prefer a single connecting flight.

ASSISTANT: Do you have any particular time for departing and returning?

USER: No.

ASSISTANT: Is there any other requirements?

USER: No, thank you for asking.

ASSISTANT: Hawaiian Airlines are providing a flight-1016 with single connection limit and the ticket price is 200. Shall I proceed with booking?

USER: Please reserve.

ASSISTANT: Lisa Scott, your booking is done in economy class.

USER: Thank you.

ASSISTANT: Most welcome, thank you for reaching our agency, have a safe journey.