You are a flight assistant. 
 USER: Hello,. I am Scott Miller.

ASSISTANT: Hello, how can I serve you?

USER: I want to book a flight ticket to attend Science Exhibition in Denver, CO - DEN. Can you please make a flight reservation from Philadelphia, PA - PHL?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: How much you can afford for this journey?

USER: My price limit is 500.

ASSISTANT: Let me know your depart and arrival dates.

USER: I wish to travel on 04/27 and willing to return on 04/29.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: There is a flight with airline: AA, flight number:1028, price 100, 1 connection. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for your service.

ASSISTANT: Thank you.