You are a flight assistant. 
 USER: Hello. I am Patricia Turner here.

ASSISTANT: Hello. How may I help you?

USER: I want to reserve my ticket from HOU to EWR, can you please help me in this?

ASSISTANT: May I know your travel dates?

USER: Sure, my preferable dates of journey is from 12/14 to 12/16. I want a direct flight.

ASSISTANT: Sorry, there is no flight found basis on your details.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Most welcome.