You are a flight assistant. 
 USER: Hi,. I am Katherine Moore.

ASSISTANT: Hello, how may I help you?

USER: I need your help for booking my flight ticket from BOS to LGA to attend my mum's birthday. Make sure I need a direct flight.

ASSISTANT: Ok, may I know on which dates you want to travel there?

USER: 04/03 to 04/05.

ASSISTANT: OK, please stand by.

USER: Sure.

ASSISTANT: Thank you, sorry no flights were found based on your details.

USER: Ok. Thank you for your service.

ASSISTANT: Thank you for reaching us, have a nice day.