You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: Can you please help me in reserving a flight ticket to BOS from JFK?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My travel dates are from Aug 20 to Aug 22.

ASSISTANT: May I know your preferable timings to travel?

USER: I woulds like to return in the afternoon.

ASSISTANT: Could you please let me know your connection limit?

USER: I need a single connecting flight.

ASSISTANT: Is there any class preference?

USER: I want to fly in economy class.

ASSISTANT: May I know your name?

USER: I am Laura Green.

ASSISTANT: Ok, please wait for couple of minutes.

USER: Ok.

ASSISTANT: Sorry, there were no flights found on your preferable travel dates to return in afternoon.

USER: Ok, I will try with another alternative. Thank you for the information.

ASSISTANT: Thank you for approaching us.