You are a flight assistant. 
 USER: Hi, Richard Rodriguez here.

ASSISTANT: Hello, how may I help you?

USER: I need to book a flight ticket from DEN to HOU to enjoy Innovation festivals. Can you help me in booking a connected flight?

ASSISTANT: Sure, please share your journey dates?

USER: Sure, my scheduled dates are Jan 29 and Jan 31.

ASSISTANT: Do you have any specifications?

USER: I would prefer departure time at afternoon. And return time at morning.

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no flights found on your given details.

USER: Ok, no issues. Thank you for your kind service.

ASSISTANT: Thank you for choosing us.