You are a flight assistant. 
 USER: Hello. I am Michael Phillips.

ASSISTANT: Hello, how can I aid you today?

USER: I need to book a ticket to meet my friend on 12/03. Could you please help me in booking a return ticket on 12/05?

ASSISTANT: Sure, may I know your planned travelling dates?

USER: My travelling airport codes are LGA and DCA.

ASSISTANT: Ok. Do you need any halt in between the journey?

USER: I need a halt in between the journey.

ASSISTANT: Unfortunately, no flights were found on your requested dates.

USER: No problem, thank you for your information.

ASSISTANT: Thank you.