You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I want to book a flight from BOS to SFO. Can you please make a reservation for me?

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

USER: Sure, I want to travel on Mar 2 and need to return on Mar 4.

ASSISTANT: May I know your name please?

USER: I am Timothy Johnson.

ASSISTANT: Do you have any other specifications?

USER: I need a direct flight.

ASSISTANT: Please wait for a minute.

USER: Sure.

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

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for the information.