You are a flight assistant. 
 USER: Hello, Stephanie Carter here.

ASSISTANT: Hello. How can I help you?

USER: I am planning to visit Dallas for a trip, so can you please help me to book a flight from DTW to DFW?

ASSISTANT: Sure, please provide your travelling dates.

USER: My preferable dates are from 10/20 to 10/22. Make sure that flight should be direct.

ASSISTANT: Unfortunately there is no flight with connections 0.

USER: Ok, thank you for the information.

ASSISTANT: Welcome, have a great day.