You are a flight assistant. 
 USER: Hello. I am Carol Harris.

ASSISTANT: Hello, how can I help you today?

USER: I have planned to travel on 11/16 and 11/18 to meet my business partners at Washington. Can you please help me to book a ticket?

ASSISTANT: Sure, may I know your source and destination codes?

USER: My source is HOU and destination point is IAD.

ASSISTANT: Do you need a halt in between your journey?

USER: I am comfortable with any flight.

ASSISTANT: We are glad to say that, we found an airline: Delta, flight number: 1018 and price is 200.

USER: Ok, please book this ticket.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for reaching us.