You are a flight assistant. 
 USER: Hello, I am Justin Allen.

ASSISTANT: Hello, how may I assist you today?

USER: I need to fly from IAD to DFW, can you please help me to book a flight ticket?

ASSISTANT: Sure, may I know your travel dates please?

USER: Sure, my journey dates are 09/13 to 09/15.

ASSISTANT: Do you have any specifications?

USER: I need a halt.

ASSISTANT: We found connecting flight 1003 in Spirit airline with fare of 100. Shall I proceed to book?

USER: Please proceed with my booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.