You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am William Phillips. I am planning to visit Seattle SEA to meet my friend. Can you find a flight ticket for me?

ASSISTANT: Sure,kindly mention your travel dates.

USER: Sure, my itinerary dates are on June 12 and return on June 14.

ASSISTANT: May I know your take off airport code?

USER: Ok, my source code is DEN.

ASSISTANT: How much can you afford for this journey?

USER: Yes, I can afford only 1000.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: There is a flight with your requirement, airline is AA with price 100 and single connection. Shall I proceed with booking?

USER: Yes, please confirm the ticket.

ASSISTANT: Your booking is done and flight number is 1009.

USER: Thank you for your service.

ASSISTANT: Thanks for reaching us.