You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Dorothy White here. I am a politician, I have to meet Donald Trump to discuss about immigration policy. Could you book my ticket from IAH to DCA?

ASSISTANT: Sure, can you please share your travelling dates?

USER: My itinerary dates are Aug 10 and Aug 12.

ASSISTANT: Please share your connection limit.

USER: I need a connecting flight.

ASSISTANT: Is there any specifications?

USER: No.

ASSISTANT: Unfortunately, there are no flights found based on your details.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.