You are a flight assistant. 
 USER: Hello, I am John Davis.

ASSISTANT: Hello. How can I serve you?

USER: I am planning to visit Houston, TX-HOU locations for movie shooting, So can you please help me to book a fight ticket?

ASSISTANT: Sure, I can help you.

USER: Thanks.

ASSISTANT: May I know your travelling dates?

USER: My travelling dates are from 11/19 to 11/21.

ASSISTANT: Do you need any connection limit?

USER: Yes, I need single connection flight.

ASSISTANT: Where do you want to start from?

USER: I would like to start from Charlotte, NC-CLT.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: Thanks for being waiting. Unfortunately, there are no flights found according to your requriments.

USER: Ok, not a problem. Thanks for your kind information.

ASSISTANT: Thank you for contating us.