You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am looking for a flight ticket with afternoon as the return time. So can you book it for me?

ASSISTANT: Sure, can you help me with your name?

USER: I am Kimberly Nelson.

ASSISTANT: Can you help me with your airport codes?

USER: The airport codes are from HOU to DFW.

ASSISTANT: May I know your travelling dates?

USER: The trip dates are from July 28 to July 30.

ASSISTANT: Is there any connection limit?

USER: I prefer a stopover flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Sorry, there are no flights found with your require dates to travel.

USER: Not a problem. Thank you.

ASSISTANT: Thank you for choosing us.