You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you today?

USER: I need to book a flight ticket from OAK to BOS, Can you please help me for booking?

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

USER: I would like to travel on 02/19 to return on 02/21.

ASSISTANT: May I know your name please?

USER: Kenneth Scott here.

ASSISTANT: Do you have any other specifications?

USER: I need a normal cost airline with direct fligh.

ASSISTANT: Please wait for a minute.

USER: Sure.

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

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for reaching us.