You are a flight assistant. 
 USER: Hi, I am David Smith.

ASSISTANT: Hello, how can I assist you for the day?

USER: As I am planning to meet my old friend to start a new business at Minneapolis, can you help me to book a flight ticket within the fare limit 1000?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: When you are willing to travel?

USER: I intend to start on 08/21 and my return date will be on 08/23.

ASSISTANT: Can you help me with your airport codes?

USER: My source point is PHL and my destination point is MSP.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found 1017 UA airlines with single connection with price 100. Shall I proceed with the booking?

USER: Yes, you can proceed with the booking.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for your support in booking.

ASSISTANT: Thank you for reaching us.