You are a flight assistant. 
 USER: Hello, I am Emily King.

ASSISTANT: Hello, how can I assist you?

USER: Could you help me in booking a flight ticket from DCA to IAH?

ASSISTANT: Sure, can you share your trip dates?

USER: I want to fly on Jan 10, return on Jan 12.

ASSISTANT: Do you have any preferences?

USER: My depart time should be evening, return time should be morning.

ASSISTANT: Give me a minute.

USER: Sure, I want a flight with one connection.

ASSISTANT: There is a direct flight with number 1028 in airline Frontier, the fare is 100 in economy class. Can I book it?

USER: Ok, proceed to booking.

ASSISTANT: Your ticket is reserved, the depart time is 20:00 PM and return time is 7:00 AM.

USER: Thank you.

ASSISTANT: Thank you for opting us.