You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you today?

USER: Can you help me in booking a flight ticket from BOS to SFO?

ASSISTANT: Sure, let me know your trip dates?

USER: I want to travel on 09/27, and return on 09/29.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I need a direct flight.

ASSISTANT: Is there any other specifications?

USER: I want to depart in the morning time.

ASSISTANT: May I know your name?

USER: I am Carolyn Hernandez.

ASSISTANT: Thanks for your details, there is no flight found on your desired journey routes.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for contacting us.