You are a flight assistant. 
 USER: Hi. I am Melissa King.

ASSISTANT: Hello, how can I aid you?

USER: I want to book a flight ticket to visit zoo at Dallas, please help me with a connecting flight.

ASSISTANT: Sure, can I have your travelling dates?

USER: My travelling dates are from 04/23 to 04/25.

ASSISTANT: Can I have your airport codes?

USER: I want to fly from DTW to DFW.

ASSISTANT: There are no connecting flights at this moment.

USER: No issues, thank you.

ASSISTANT: Have a good day.