You are a flight assistant. 
 USER: Hello, Jeffrey Campbell here.

ASSISTANT: Hello, Jeffrey. How can I help you with today?

USER: I want a flight ticket from SEA to IAD. Can you book my flight ticket?

ASSISTANT: Sure, I can help you with that. Jeffrey, can you please provide your preferable dates?

USER: Yes sure, I want to take off on 07/20 and return on 07/22.

ASSISTANT: OK, let me check that for you.

USER: OK.

ASSISTANT: Jeffrey, there is a flight available at your requested dates with price 100 and the connection limit is 1.

USER: That's sound nice. Please proceed my tickets.

ASSISTANT: Sure, give me a moment.

USER: OK.

ASSISTANT: I have successfully booked the flight ticket for you.Your flight number is 1007 and the airline is Spirit.

USER: Thank you for your fast service.

ASSISTANT: Have a great journey. You are most welcome. Thank you for contacting us.