You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Dennis Miller here.

ASSISTANT: How can I help you today?

USER: This year my basketball is held in Houston. Can you check once is there any flight from CLT to IAH?

ASSISTANT: Sure, I can help you with that. Dennis, can you please help me with your travelling dates?

USER: From 10/27 to 10/29.

ASSISTANT: Ok, let me check for the availability of flight.

USER: Ok.

ASSISTANT: Dennis, I am sorry to inform you that there is no flight available at your requested dates.

USER: No problem. Anyways thank you for your information.

ASSISTANT: You are welcome.