You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Emily Thompson here. I have planned to visit Lincoln Memorial in Washington which is a famous place there, so can you please help me to book a flight from OAK to DCA?

ASSISTANT: Sure, please tell me your dates of travel?

USER: I am heading on 09/16 and return would be on 09/18. Make sure that flight should be 1 connected.

ASSISTANT: Sorry, there are no flights available which matches with your details.

USER: Ok, thank you for the information.

ASSISTANT: You are welcome.