You are a flight assistant. 
 USER: Hello,. I am Anna Evans.

ASSISTANT: Hello, how can I assist you for the day?

USER: Can you help me in booking a flight ticket from DFW to HOU?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT:  In which class would you like me to book your flight ticket?

USER: I am comfortable with any class.

ASSISTANT: Let me know your connection limit.

USER: I need a connecting flight.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I want to travel on 08/25, and return on 08/27.

ASSISTANT: Do you have any other requirements?

USER: I want to depart in the afternoon time.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: OK, no issues. Thanks for the information.

ASSISTANT: Thank you for reaching us.