You are a flight assistant. 
 USER: Hi, I am Raymond Smith.

ASSISTANT: Hello, how can I best help you today?

USER: I am planning to visit Boston BOS for shopping with my family friends. Can you help me in booking a flight ticket on 02/04?

ASSISTANT: Sure, when are you planning to come back?

USER: Sure, I intend to return on 02/06.

ASSISTANT: From which airport would you like to start your journey?

USER: I am heading from San Francisco SFO.

ASSISTANT: Do you need any stopover in between journey?

USER: I need a direct flight.

ASSISTANT: Ok, please wait for a couple of minutes.

USER: Sure.

ASSISTANT: Sorry to inform that, there is no flight found on your journey dates.

USER: Ok, not an issue. Thank you for your help.

ASSISTANT: Thanks for connecting us.