You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I need to book a flight ticket from SFO to LGA, can you help me in booking a flight ticket?

ASSISTANT: Sure, I can help you with that. May I know on which dates are you planning to depart and arrive?

USER: Sure, my journey dates are May 15 and May 17.

ASSISTANT: Do you need stopover in between your journey?

USER: I am comfortable with any flight.

ASSISTANT: Please let me know if you have any other specifications.

USER: No more specifications.

ASSISTANT: May I know your good name please?

USER: Sure, Jerry Gonzalez here.

ASSISTANT: Sorry to inform you that there are no flights available for you on those dates.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for choosing us, have a nice day.