You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am mark Robinson.

ASSISTANT: How may I assist you?

USER: can you please help me in booking my flight ticket from BOS to ATL?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: My travelling dates are Nov 23 and Nov 25.

ASSISTANT: Can you please share your connection limit?

USER: I need single connection flight.

ASSISTANT: Is there any time concern?

USER: I want depart ticket at morning time and my return ticket at afternoon time.

ASSISTANT: May I know your class preference?

USER: No.

ASSISTANT: Wait a moment please.

USER: Ok, I will wait.

ASSISTANT: Mark Robinson, there are no flights available in you route.

USER: Ok, thank you for checking.

ASSISTANT: Thank you for choosing us.