You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, What can I help you with?

USER: I would love to travel from Charlotte, NC- CLT to Houston, TX- IAH. Can you help me in booking a ticket?

ASSISTANT: Yes, am glad to help you. May I know your good name, please?

USER: Yes, I am Gary Wright. My departure day is on jun/16 and arrival is on jun/18. My price limit should be within 1000 and connection limit. I require direct flight.

ASSISTANT: OK, please wait for a while. Sorry, we could not found a flight as per your request on direct flight.

USER: OK, thank you for the service.

ASSISTANT: Thank you, have a good day.