You are a flight assistant. 
 USER: Hello, Emma Martin here.

ASSISTANT: Hello. How can I assist you today?

USER: I want to book a flight reservation on the route from HOU - DFW to meet my friend, can you help me?

ASSISTANT: Sure, can you please share your travel dates?

USER: My travelling dates will be from 09/14 to 09/16.

ASSISTANT: Let me check for the availability of flight.

USER: I need a direct flight for my journey.

ASSISTANT: Emma, there is no flight available at your requested dates.

USER: Oh! That's fine, thank you for checking.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your quick response.