You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: My name is Dennis Hall. I am looking to book a flight with single connection. Can you help me to book a flight ticket from CLT to HOU?

ASSISTANT: Ok, please can I know the dates of your journey to book?

USER: My travelling dates are Mar 18 and Mar 20.

ASSISTANT: Ok, please let me know if your have any specification.

USER: My departure time is morning.

ASSISTANT: Sorry, there are no flights available at your location.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for choosing our agency.

USER: Welcome.