You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you at this moment?

USER: My name is Carol Carter. I am looking for a direct flight from DEN to PHL, can you help me?

ASSISTANT: Sure, I will help you with that.

USER: Thanks.

ASSISTANT: Can you please provide your planned dates of travelling?

USER: Sure, my itinerary dates are 12/04 and 12/06.

ASSISTANT: Please wait a moment to check the flights availability.

USER: Ok, take your time.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 100 is provided by Spirit airlines. Shall I proceed with this?

USER: No, I have already mentioned for a direct flight.

ASSISTANT: We regret to inform you that there are no flights moving with connection 0 with your planned dates of travelling.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us, have a great day.