You are a flight assistant. 
 USER: Hello. I am Jacob Clark.

ASSISTANT: Hello, how may I help you?

USER: I am planning to book a ticket to attend a meeting at OAK. Can you please help me out from IAD?

ASSISTANT: Sure, we are here to help you. May I know your planned travel dates?

USER: I would like to travel on June 11 and return back on June 13.

ASSISTANT: Do you have any specifications?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: Please give me a minute to check the availability of flights.

USER: Sure.

ASSISTANT: An airline Delta of flight number 1003 having a halt with price 100. Shall I proceed for booking?

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

ASSISTANT: Your booking has been confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.