You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Janet Davis.

ASSISTANT: Janet, how can I help you now?

USER: I have a very argent meeting in Boston, can you please book a direct flight ticket?

ASSISTANT: Sure, may I know the travelling dates?

USER: My travelling dates are 07/11 and 07/13.

ASSISTANT: Can you please tell me the source and destination details?

USER: I want to travel from ATL to BOS.

ASSISTANT: Sorry Janet, there are no flights found on your requirement. Thank you for choosing us, have a nice day.

USER: It's ok. Thank you for your information.

ASSISTANT: You are welcome.