You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello.

USER: Could you please help me in booking a flight?

ASSISTANT: How can I help you? sure, can I know source and destination?

USER: I searching for flight from Philadelphia,PA-PHL to Washington,DC-IAD.

ASSISTANT: OK, could you tell me travelling dates?

USER: My travelling dates are 01/11 to 01/13. I am looking for a flight with 1 connection limit.

ASSISTANT: OK, can I know is there any price limit?

USER: Price limit is 5000.

ASSISTANT: OK. Give me a moment.

USER: Sure,.

ASSISTANT: I had found a flight for you. Flight number is 1001 of spirit airlines. Can I book your ticket?

USER: Please confirm my booking.

ASSISTANT: OK. Can I know your name for booking purpose?

USER: My name is Justin Thomas.

ASSISTANT: Thank you Justin for the details.

USER: Thank you.