You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I  help you?

USER: I am Joshua Hernandez. I planned to attend for a meeting in HOU, can you please help me to book a flight ticket from CLT?

ASSISTANT: Your travelling dates please?

USER: I prefer to travel on 07/29 and 07/31.

ASSISTANT: I am sorry no flights found on your route.

USER: Ok, no problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your time.