You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I be your helping hand today?

USER: I want to book a ticket from DCA to CLT to attend for Sports festival. Can you please help me for booking?

ASSISTANT: Sure, may I know your travelling dates please?

USER: My travelling dates are Oct 20 and Oct 22.

ASSISTANT: Ok, do you need a lay by in between the journey?

USER: I want single lay by in between my journey.

ASSISTANT: Do you prefer business or economy class?

USER: I am comfortable with any class.

ASSISTANT: Ok, can I have your good name please?

USER: Sure, I am Emily Collins.

ASSISTANT: We found a direct flight with fare of 200 and a economy class matches your schedule.

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been confirmed with flight number 1011 in Delta Airlines.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.