You are a flight assistant. 
 USER: Hi. Frank Davis here.

ASSISTANT: Hello, how may I help you?

USER: Can you book a flight ticket for my airport codes that is from CLT to DFW?

ASSISTANT: Sure, may I know your connection limit?

USER: I prefer a stopover flight.

ASSISTANT: Let me know your travelling dates.

USER: The travel dates are from July 04 to July 06.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name please?

USER: I am Frank Davis.

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

USER: Not a problem.

ASSISTANT: Thank you for opting us.

USER: Thank you.