You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me to book a flight from ATL to BOS?

ASSISTANT: Sure, please share your itinerary dates.

USER: Sure, I want to travel on June 30 and need to return on July 2.

ASSISTANT: May I know your name?

USER: Emily Johnson here.

ASSISTANT: Do you have any specifications?

USER: My depart time must be in the morning.

ASSISTANT: Sorry Emily Johnson, no flights are available on your route.

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for choosing us.