You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I am Virginia Davis.

ASSISTANT: Ok.

USER: Can you help me in booking a flight ticket from IAH to DTW?

ASSISTANT: Sure, we are perky to help you.

USER: I would like to fly on Nov 21 and return on Nov 23.

ASSISTANT: Let me know your connection limit.

USER: I need a single connection.

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

USER: I am comfortable with any class.

ASSISTANT: Do you have any other requirements?

USER: I would like to return in the evening time.

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

USER: Ok.

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

USER: Not an issue. Thank you.

ASSISTANT: Thank you for choosing us.