You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Hew may I assist you today?

USER: My name is Amanda King, I want to book a flight ticket in economy class to visit Washington. Can you book a connecting flight for me?

ASSISTANT: Sure, I will help you with that. Can you please share your preferable journey dates?

USER: I will fly on 3rd Jan and return on 5th Jan.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: My source point is OAK and my destination is DCA.

ASSISTANT: Do you have any class preference?

USER: Yes, I need a economy class.

ASSISTANT: Is there any connection in between your journey?

USER: I already mention, please check it.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: Ok, thank you for the information.

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