You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am James Taylor.

ASSISTANT: How can I assist you at this moment?

USER: I want to book a flight from JFK to reach BOS to meet my high school friends. Can you book a connecting flight for me?

ASSISTANT: Sure, I am here to help you. Can you please provide your journey dates?

USER: I have planned to travel on Aug 20th and return on Aug 22nd.

ASSISTANT: Do you have any specific depart and arrival time for this journey?

USER: I have planned to depart at afternoon and return on morning.

ASSISTANT: Do you have any airline preference for this trip?

USER: No.

ASSISTANT: James Taylor, there are no flight services available with your preferences on this route.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for contacting us.