You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I would like to travel from IAD to DFW as a holiday trip. Can you do the reservation?

ASSISTANT: Yes, can you tell me your travelling dates?

USER: My journey dates are 12/25 and 12/27.

ASSISTANT: Do you have any other specifications?

USER: I need break in my journey with business class.

ASSISTANT: Can I know your name for documentation?

USER: Matthew Moore here.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for reaching us.