You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Paul Young. I am planning to visit Philadelphia to meet my grandfather, can you please aid me in booking a flight ticket?

ASSISTANT: Sure, I will help you to book a flight ticket. Can you please provide me your travelling dates?

USER: I would like to start my journey on 10/30 and my return will be on 11/01.

ASSISTANT: Give me a moment.

USER: Ok, take your time.

ASSISTANT: As per your travelling dates, there a is a flight is available, so I need your airport codes to search a flight with your airport codes?

USER: I want to fly from DEN to PHL.

ASSISTANT: There is one flight is available for you with single connection. Shall I proceed for booking?

USER: Yes, you may proceed.

ASSISTANT: Your ticket is booked with flight number 1017 and airline is UA.

USER: Thank you for booking.

ASSISTANT: Welcome. Thank you for choosing us.