You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Raymond carter,could you help me in booking a ticket from MSP -EWR?

ASSISTANT: Sure Carter. Help me with the dates?

USER: Sure, I have planned my trip for 2 days that is 12/17 to 12/19.

ASSISTANT: Sorry, there is no flight available.

USER: OK,thank you.

ASSISTANT: Thank you.