You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Dorothy Garcia, want to travel from DCA to ATL. Please help me in booking my ticket.

ASSISTANT: Sure, let me know your travelling dates.

USER: My trip dates are from 06/21 to 06/23.

ASSISTANT: Please share your specifications.

USER: I need a connected flight.

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

USER: It's ok, thank you.

ASSISTANT: Thank you for choosing us.