You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me in booking from LAS to DTW?

ASSISTANT: Sure, I am here to help you for this. Could you please share me your travel dates?

USER: My travelling dates are from Dec 7 to Dec 9.

ASSISTANT: May I know your name please?

USER: My name is Edward Garcia.

ASSISTANT: Do you have any other specifications regarding your journey?

USER: I need a direct flight.

ASSISTANT: Is there any other criteria?

USER: My return time should be evening.

ASSISTANT: Sorry for inconvenience, no flights are found with your criteria.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you very much for contacting our agency.