You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Can you help me in booking from IAH to DCA?

ASSISTANT: Sure, please share your planned travel dates?

USER: My travelling dates are from May 18 to May 20.

ASSISTANT: Let me know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Any other preferences?

USER: No.

ASSISTANT: Can I have your name please?

USER: My name is Anna Davis.

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

USER: Ok, No issues, thanks for the information.

ASSISTANT: Thank you for reaching us.