You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Patricia Turner here. I want to attend for my uncles's house ceremony in NC - CLT. Could you please help me to book a flight?

ASSISTANT: Sure, please share me your travelling dates?

USER: My travelling dates are 09/02 - 09/04.

ASSISTANT: Kindly assign me your source code?

USER: Ok, my journey starts from TX - IAH.

ASSISTANT: Sorry, there were no flights with your given details.

USER: Ok, no an issue. Thanks for the information.

ASSISTANT: Thank you for reaching us.