You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I want to attend my brother's convocation ceremony, could you book my ticket from IAH to IAD?

ASSISTANT: Sure, we are happy to assist you in booking. Could you please mention your planned travelling dates to proceed further?

USER: My itinerary dates are Feb 10 and Feb 12.

ASSISTANT: Do you need a lay by in between your journey?

USER: I need 1 lay by in my journey.

ASSISTANT: Can I have your name please?

USER: Steven Lewis here.

ASSISTANT: May I know if you have any other comforts in between your journey?

USER: I want return from IAD in the evening.

ASSISTANT: Ok, please wait a moment I'll search best flight for you.

USER: Sure.

ASSISTANT: Thank you for waiting, we found an economy class ticket providing by Jet Blue airline with the flight number-1020 and the fare 100. Shall I book the connecting flight?

USER: Please book my ticket.

ASSISTANT: Your ticket has been confirmed and your return time will be in the evening.

USER: Thank you for assisting me.

ASSISTANT: It's pleasure to serve you.