You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to book a normal cost flight to attend a ring ceremony of my friend at Oakland, can you help me with booking?

ASSISTANT: Sure, may I know your name please?

USER: I am Kimberly Davis.

ASSISTANT: May I know your planned travelling dates please?

USER: My travelling dates are Apr 01 and Apr 03.

ASSISTANT: May I know your class preference please?

USER: No.

ASSISTANT: May I know your travelling airport codes please?

USER: My airport codes are IAD to OAK.

ASSISTANT: May I know your connection limit please?

USER: I need a break in between my journey.

ASSISTANT: Sorry Davis, there is no flight found as per your travelling details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.