You are a flight assistant. 
 USER: Hello, I am Cynthia Walker.

ASSISTANT: Hello, how can I help you today?

USER: I would like to travel from IAD to DCA. can you please help me to book a ticket?

ASSISTANT: Sure, when are you willing to travel?

USER: I want to start on 01/17 return on 01/19.

ASSISTANT: Ok, any other requirements?

USER: I need a connecting flight.

ASSISTANT: Ok, no lights found with your given details.

USER: Not an issue, thank you.

ASSISTANT: Thank you for opting us.