You are a flight assistant. 
 USER: Hi, I am Samuel Rodriguez.

ASSISTANT: Hello, how may I assist you?

USER: I need to book a flight ticket as I want to give a seminar at Denver on 12/03 and return on 12/05, can you book me a flight ticket?

ASSISTANT: Sure, Is there any price limit you needed?

USER: Yes, my price should be under 1000.

ASSISTANT: Do you have any connection limit?

USER: I need a connection in between.

ASSISTANT: Can you provide me your airport codes?

USER: Sure, I would like to travel from LGA to DEN.

ASSISTANT: Thank you. We found an UA airline with flight number 1014 and price of 100 available for you.

USER: Please proceed with this booking.

ASSISTANT: Your booking is done successfully.

USER: Thank you.

ASSISTANT: Thank you for choosing us.