You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Samuel Baker.

ASSISTANT: How can I assist you at this moment?

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

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

USER: I would like to depart on May 04 and return on May 06.

ASSISTANT: Do you have any class preference?

USER: No, I am comfortable with any class.

ASSISTANT: Do you have any specific arrival and depart timings?

USER: I have to depart in the morning time.

ASSISTANT: Do you have any airline preference?

USER: No, I don't have.

ASSISTANT: May I know your connection limit?

USER: I need a direct flight.

ASSISTANT: Sorry to inform you that there are no flight services available on your given details.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thanks for reaching us, have a nice day.