You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Kevin Mitchell.

ASSISTANT: Kevin, what can I do for you?

USER: Can you please help me in booking a flight ticket from IAH to HOU locations?

ASSISTANT: Sure, can you please let me know your trip dates?

USER: My travelling dates are from 09/13 and 09/15.

ASSISTANT: Ok, please be on hold for sometime.

USER: Ok.

ASSISTANT: Sorry Mitchell, there are no flights available on your preferred dates.

USER: It's ok. Thank you for the information.

ASSISTANT: You are welcome, thank you very much for contacting us.