You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER: Please help me out in booking the ticket from IAD to PHL.

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: My trip dates will be May 25 to May 27.

ASSISTANT: Ok, do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Ok, hold on for a moment. Let me check the best available flight for you.

USER: Ok.

ASSISTANT: I found a flight for you with American Airlines and it costs you 100. Shall I proceed?

USER: Please proceed.

ASSISTANT: May I know on whose name you would like to book this ticket?

USER: Nancy Taylor is my name.

ASSISTANT: Your ticket has been booked with 1014 flight number.

USER: Thank you.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.