You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I want to travel from OAK to DCA. Can you help me to book a flight ticket?

ASSISTANT: Sure, can you please share your preferable journey dates?

USER: I want to fly in the flight on Jan 14 and Jan 16.

ASSISTANT: May I know your name please?

USER: Paul Rodriguez.

ASSISTANT: Do you have any other specifications?

USER: I want to depart in afternoon time.

ASSISTANT: Is there any connection limit?

USER: I want to have a connection of 1.

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

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you for reaching us.