You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Please assist me in booking a flight ticket from PHL to DEN.

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My trip is in June from 24th to 26th.

ASSISTANT: May I know your connection limit?

USER: I prefer a break in between my journey.

ASSISTANT: Can I know your name?

USER: Stephen Gonzalez here.

ASSISTANT: Sorry to say, no flight is available for you as per your requests.

USER: Can you please check again with depart time as afternoon?

ASSISTANT: Sorry no flight available.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.