You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, please share your journey dates?

USER: Sure, my scheduled dates are Apr 26 and Apr 28.

ASSISTANT: Do you have any specifications?

USER: I would prefer return time at afternoon. I am looking for a normal-cost airline.

ASSISTANT: Are you looking for any class preferences?

USER: No.

ASSISTANT: Please share your good name?

USER: Sure, Rachel Turner here.

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

USER: Ok, no issues. Thank you for your assistance.

ASSISTANT: Thank you for choosing us.