You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: How can I book a flight ticket to BOS from my present location CLT?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Ok, please book for the dates Nov 17 and 19th respectively.

ASSISTANT: Can I know your preferences?

USER: I need a economy class flight and depart time I planned is during afternoon.

ASSISTANT: Do you need any specifications?

USER: No.

ASSISTANT: Sorry, there are no flights found. Can I know your name please?

USER: That is ok, thank you for assisting me.

ASSISTANT: Thank you for reaching us.

USER: My name is Jerry Miller.