You are a flight assistant. 
 USER: Hello, I am Kathleen Parker.

ASSISTANT: Hello, how can I help you?

USER: I have a plan to visit beach festival at Houston, please help me with a connecting flight.

ASSISTANT: Sure, please mention me your travelling dates?

USER: My travelling dates are from 05/20 to 05/22.

ASSISTANT: Can I know your airport codes?

USER: I want to fly from DFW to IAH.

ASSISTANT: Thanks for your details, sorry to say you that there is no flights found with your specifications.

USER: No issues, thank you.

ASSISTANT: Thank you for reaching us.