You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to visit Denver, can you please reserve me a flight ticket from DFW to DEN?

ASSISTANT: Sure, please share your planned travel dates?

USER: My planned dates of journey are Sept 12 and Sept 14.

ASSISTANT: Let me know your connection limit?

USER: I prefer connecting flight for this trip.

ASSISTANT: Any other preferences?

USER: I would like to travel in business class flight for this trip.

ASSISTANT: Can I have your name please?

USER: My name is Samuel Wright.

ASSISTANT: Sorry, no flights found with your given details.

USER: Ok, not an issue. I will find any alternate for this trip. Thank you for providing information.

ASSISTANT: Thank you for reaching us.