You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I be of your service?

USER: Need a flight to attend meeting in Houston, HOU from ATL.

ASSISTANT: Sure, I can help you.

USER: Thanks.

ASSISTANT: What are your travel dates?

USER: 12/17 - 12/19 are my travel dates.

ASSISTANT: Ok, Please wait.

USER: OK.

ASSISTANT: May I know your name?

USER: Daniel Lopez is my name.

ASSISTANT: Thanks for waiting, there are no flights available at this moment matching your particulars.

USER: Ok, no problem. Thank you for the response.

ASSISTANT: Thanks for choosing us.