You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Joseph Hill, can you please help me in booking my flight ticket to DEN from LAS to meet my cousin?

ASSISTANT: Sure, we are here to help you. Can you share me your trip dates?

USER: Thank you for considering my request. My trip dates are Mar 29 and Mar 31.

ASSISTANT: Is there any class preference for you?

USER: I am comfortable with any of the class but I need a flight with normal-cost airline.

ASSISTANT: May I know your depart time and arrival time?

USER: I need to departure from my location in the morning.

ASSISTANT: Do you have any other preferences?

USER: I need a connecting flight for my journey.

ASSISTANT: Sorry to inform you that, there are no flights available with your requirements.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for reaching us.