You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Linda Hernandez.

ASSISTANT: How can I aid you?

USER: I need to book  a flight ticket from HOU to DFW, Can you please help me for booking?

ASSISTANT: Sure, we are here to help you. Can I know your travelling dates?

USER: I would like to 11/13 to 11/15.

ASSISTANT: Do you need any stop over?

USER: Yes, I need a connecting flight.\.

ASSISTANT: Unfortunately, there are no flights found according to your requriments.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for opting us.