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 MSP to EWR?

ASSISTANT: May I know your travel dates?

USER: I want to depart on Oct 15 and need to return on Oct 17.

ASSISTANT: Do you prefer connecting flight?

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I prefer normal-cost airline to travel.

ASSISTANT: May I know your good name?

USER: Myself Frank Mitchell.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

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

ASSISTANT: Thank you for reaching us.