You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I would like to book a ticket from DCA to DEN, can you please help me out?

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

USER: I am travelling on these dates Sept 14th and 16th.

ASSISTANT: On what name, do I need to reserve your ticket?

USER: Dennis Martin here.

ASSISTANT: Do you have any other requirements?

USER: I need single connected flight.

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

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for choosing us.