You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you now for the day?

USER: I am David Jones. I want to book a flight ticket to attend a sports live event in Denver, could you help me in booking a flight ticket?

ASSISTANT: Ok. On which dates you would like to travel?

USER: I would like to fly on 11/16 and return on 11/18.

ASSISTANT: May I have your boarding point?

USER: My source is Philadelphia, PA - PHL and destination code is CO - DEN.

ASSISTANT: Help me with your specifications, if you have?

USER: I need a halt in between my journey.

ASSISTANT: Thanks for waiting.

USER: My price limit is 200.

ASSISTANT: Unfortunately, we have no flight with your information.

USER: No problem. Thank you for your information.

ASSISTANT: Thank you for connecting us.