You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I need you to book a flight ticket from JFK to LAX, please help me.

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

USER: November 27 and 29, are my planned travelling dates.

ASSISTANT: May I know your name please?

USER: Daniel Jackson here.

ASSISTANT: Do you have any other specifications?

USER: Nothing much to state.

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

USER: That's ok. Thank you.

ASSISTANT: Thank you for reaching us.