You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Can you help me to book a flight from DEN to MCO?

ASSISTANT: Sure, we are happy to help you. Can I have your trip dates?

USER: My travelling dates are May 05 and 07.

ASSISTANT: Do you prefer any break in between journey?

USER: I prefer direct flight.

ASSISTANT: May I know your class preference?

USER: I am fine with any flight.

ASSISTANT: Is there any other specifications for you?

USER: I want to return at morning.

ASSISTANT: Can you please let me know your good name to proceed further?

USER: Sure, my name is Thomas Scott.

ASSISTANT: We are regret to inform you that, no flights are available based on your requirements.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for reaching us.