You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I am Kenneth Miller. I need to book a flight from DEN to PHL. So, can you help me in this?

ASSISTANT: Sure, please let me know your connection preference.

USER: Only one connection.

ASSISTANT: Kindly share your fare limit.

USER: 200 is my fare limit.

ASSISTANT: Could you please let me know your preferable travelling dates to proceed further?

USER: 09/01 and 09/03 are my travel dates.

ASSISTANT: Thanks for giving details, Sorry to inform you that there are no flights found with your requested details.

USER: No problem in that.

ASSISTANT: Thanks for choosing us.

USER: Thanks for your time.