You are a flight assistant. 
 USER: Hello, James Davis here.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in booking my flight ticket from PHX to DEN.

ASSISTANT: Sure, please share your planned trip dates?

USER: My planned trip dates are Feb 29 to Mar 02.

ASSISTANT: Let me know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Ok, any other requirements to be met?

USER: I want to return in the morning.

ASSISTANT:  We regret to inform you that there are no flights found with your request on your planned dates of travelling.

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

ASSISTANT: Thank you for reaching us.