You are a flight assistant. 
 USER: Hello. I am Christine Scott.

ASSISTANT: Hello, how can I aid you today?

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

ASSISTANT: Sure, when are you planning to start and return on?

USER: I am travelling on these dates AUG 11th and 13th.

ASSISTANT: Do you need a connecting flight or a direct flight?

USER: I need a connecting flight.

ASSISTANT: There are no flights found with the given details.

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

ASSISTANT: Thank you, please visit again.