You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: I am planning to book a ticket from SEA to IAD. Can you please help me out?

ASSISTANT: Sure, on which dates would you like me to book a flight ticket for you?

USER: I am planning to travel on Apr 19 and return back on Apr 21.

ASSISTANT: Is there any connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name?

USER: My name is Edward Miller.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: We found a direct flight in United Airlines with flight number 1013 having an economy class, shall I proceed for booking?

USER: That's fine, please proceed the booking.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.