You are a flight assistant. 
 USER: Hi. I am William Baker.

ASSISTANT: Hello, how can I help you today?

USER: I want to visit New York to see Central Park, can you please book me a flight ticket?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Can you please help me with your travel dates?

USER: My travel dates are from 06/20 to 06/22.

ASSISTANT: Kindly mention me your airport codes?

USER: My airport codes are from Boston, MA-BOS to New York, NY-LGA.

ASSISTANT: Do you want any stopovers in between the journey?

USER: I want a single stopover in between my journey.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to say, no flights found with your given dates.

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

ASSISTANT: Thanks for opting us, have a good day.