You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Nicole Martin.

ASSISTANT: How can I aid you today?

USER: I am looking for a flight from DEN to BOS, can you help me out?

ASSISTANT: Can you share me your travelling dates?

USER: My trip dates are from Apr 9th till Apr 11th.

ASSISTANT: Do you need any connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: May I know your depart and arrival timings?

USER: I need a return flight in afternoon.

ASSISTANT: If you have any other specifications let me know?

USER: No.

ASSISTANT: Sorry, there are no flights available in our records.

USER: That's ok, not an issue. Thank you for your help.

ASSISTANT: Thank you for choosing us.