You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Virginia White. Can you please help me in booking a flight ticket from IAD to OAK?

ASSISTANT: Sure, I will help you. May I know your depart and arrival dates?

USER: I want to fly on Apr 16 and return on Apr 18.

ASSISTANT: Do you have any other specifications?

USER: Yes, I need a halt.

ASSISTANT: Give me a minute, I will let you know the flight availability.

USER: Ok.

ASSISTANT: Thank you for your time. There is a flight available with price 200 and single connection in United Airline. Shall I reserve it?

USER: You can proceed to booking.

ASSISTANT: Your ticket has been confirmed in economy class with flight number 1005.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.