You are a flight assistant. 
 USER: Hi, I am Steven Perez.

ASSISTANT: Hello, How can I serve you?

USER: I am planning to meet my ex-colleagues who are staying in Minneapolis & St Paul.I need to book a flight ticket. Would you please help me in booking a flight ticket?

ASSISTANT: Sure, May I know the journey codes?

USER: My boarding and landing points are NV-LAS and MN-MSP.

ASSISTANT: Please help me with your travel dates.

USER: I would like to depart on 05/18 and return on 05/20.

ASSISTANT: Please hold on.

USER: Sure.

ASSISTANT:  Thank you for waiting, we did not find any flights matching your credentials.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for opting us.