You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Larry Green.

ASSISTANT: How may I help you?

USER: Can you please help me to book flight from EWR to MSP?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My planned dates are Nov 9 and Nov 11.

ASSISTANT: Do you have any preferences?

USER: My return time should be in the evening with single connecting flight.

ASSISTANT: Sorry to say that, there is no flight found with your requirements.

USER: Ok, not a problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for checking.