You are a flight assistant. 
 USER: Hello, I am Nicole Wright.

ASSISTANT: Hello, how may I assist you?

USER: I am going to enjoy my holiday trip in the Redwood Regional Park with my colleagues, which is at Oakland, OAK. Can you please make a reservation from Washington, DCA?

ASSISTANT: Sure, I can do that for you. Do you have any other specifications?

USER: I need  a connecting flight.

ASSISTANT: Ok, please help me with your travelling dates to proceed further.

USER: My journey dates on 10/03 and 10/05.

ASSISTANT: Ok, wait a minute please.

USER: Sure.

ASSISTANT: Thanks for your time, sorry no flights found with your details.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us, have a nice day.