You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What can I do for you at this moment?

USER: Can you please help me in booking a flight ticket from JFK to DCA?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travel dates are from Sept 15th to Sept 17th.

ASSISTANT: Can I have your good name please?

USER: I am Gregory Walker.

ASSISTANT: Ok, share your class preferences?

USER: I am comfortable with any class.

ASSISTANT: Do you have any other requirements.

USER: I want to return in the afternoon.

ASSISTANT: Ok, please wait for few minutes.

USER: Ok.

ASSISTANT: We found a Spirit Airline with fare of 200 and a lay by in between the journey matches your schedule.

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed with flight number 1021.

USER: Thank you.

ASSISTANT: Thank you for reaching us.