You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Laura Hall. I am planning to book a flight ticket from IAH to DCA. Can you help me with that?

ASSISTANT: Sure, may I know your travel dates?

USER: My travel dates will be Apr, 18 and Apr, 20.

ASSISTANT: Do you have any specifications?

USER: I need a stopover.

ASSISTANT: We found a economy flight on your details with airline Delta, flight number: 1003. Shall I book this ticket?

USER: Please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thank you.