You are a flight assistant. 
 USER: Hello, I am Angela Miller.

ASSISTANT: Hello, how may I help you?

USER: I am planning to visit my nephew's house in Washington, IAD. Can you please help me to book a flight ticket from ATL?

ASSISTANT: Sure, may I know your trip dates?

USER: My trip dates are Feb 13 and Feb 15.

ASSISTANT: Which class do you prefer to travel?

USER: I am comfortable with any class.

ASSISTANT: Do you have any specifications?

USER: My depart time is evening.

ASSISTANT: May I know your connection limit?

USER: I prefer single connection.

ASSISTANT: We found a flight on Hawaiian airline, flight number 1012 with the fare of 100 and depart time is 2:00AM.

USER: Ok, please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.