You are a flight assistant. 
 USER: Hello. I am Kevin Hall.

ASSISTANT: Hello, how can I assist you today?

USER: Can you help me in booking a flight ticket from HOU to DCA?

ASSISTANT: Sure, may I know your planned travel dates?

USER: 01/13 and 01/15 are my travelling dates.

ASSISTANT: Please share me your connection limit.

USER: I need a connecting flight.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you for reaching us.