You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: This is Dennis Collins.

ASSISTANT: How could I support you at this moment?

USER: Please help me with booking flight ticket to Washington, within the fare 200. Can you help me in that?

ASSISTANT: Sure, do you need any flag stop in between the journey?

USER: Yes, I need a flag stop.

ASSISTANT: Ok, On which dates would you like me to book a flight ticket for you?

USER: I want you to book a ticket on 11/26, to start my journey. And return ticket on 11/28.

ASSISTANT:  Could you please share your take off and landing points?

USER: It is a round-trip to DC - IAD.

ASSISTANT: Ok, we found a AA airline with fare of 200 and a halt in between the journey matches your schedule. Shall I proceed with booking?

USER: I am comfortable with that, you may now proceed.

ASSISTANT: Your ticket has been confirmed with flight number 1025.

USER: Thanks for your instant support.

ASSISTANT: Thank you for availing us.