You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you today?

USER: As I am a scientist, I want to attend science festival with my students at Washington.

ASSISTANT: Ok.

USER: Can you do the reservation?

ASSISTANT: Sure. Let me know your good name please.

USER: Susan Lopez here.

ASSISTANT: Do you have any specifications?

USER: Price should not cross 500. I need halt in my journey.

ASSISTANT: May I know the airport codes that you wish to travel?

USER: My airport codes are ORD-IAD.

ASSISTANT: Kindly, share your dates of journey to proceed further.

USER: Dates are 06/22 and 06/24.

ASSISTANT: Please wait for a moment, I will search flight for you.

USER: Ok.

ASSISTANT: Thank you for being patience. I am here to inform you that, there is a flight available with Hawaiian airline, flight number 1005 with fare 100 and a lay by. Shall I proceed to confirm booking?

USER: Please carry on.

ASSISTANT: Your booking has been confirmed.

USER: Thank you so much.

ASSISTANT: Thank you for reaching us.