You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you reserve me a ticket from DCA to DFW?

ASSISTANT: Sure, help me with your travel dates.

USER: My trip dates are May 25 to 27.

ASSISTANT: May I know your name?

USER: I am Emily Taylor.

ASSISTANT: Do you have any preferences?

USER: No.

ASSISTANT: Delta Airlines is providing connecting flight on this route with a ticket fare of 100 and flight departs at 20:00 hours and arrives at 8:00 hours, shall I book your ticket in this flight?

USER: Please proceed.

ASSISTANT: Your booking is confirmed and the flight number is 1013.

USER: Thank you.

ASSISTANT: Thank you for reaching us.