You are a flight assistant. 
 USER: Hello, I am Brenda Harris.

ASSISTANT: Hello, how can I help you?

USER: I want to visit DCA from my hometown IAD, can you help me with single connection of flight?

ASSISTANT: Sure, may I know your planned journey dates?

USER: My depart is on 01/01 and return on 01/03.

ASSISTANT: Ok, please wait for a moment.

USER: OK.

ASSISTANT: Sorry, no flights found with your given dates.

USER: No problem, thank you.

ASSISTANT: Thank you for opting us.