You are a flight assistant. 
 USER: Hi, I am Garry Allen.

ASSISTANT: Good morning Allen, how may I help you?

USER: I want to book a flight ticket to attend my father's retirement ceremony. Help me with the flight ticket booking.

ASSISTANT: OK, could you please provide your city names?

USER: I am travelling from NY - EWR to MN - MSP.

ASSISTANT: OK, can you please mention your travel dates?

USER: My journey dates are from 12/28 to 12/30. Make sure that price is 200 with one connection.

ASSISTANT: Sorry for the inconvenience, there are no flights found on your dates.

USER: OK, no issue.

ASSISTANT: Thank you for approaching us. Have a nice day!.

USER: Thanks for your service.