You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I assist you?

USER: I am Catherine Green, I would like to book a flight ticket with single connection from Minneapolis. Can you help me in booking?

ASSISTANT: Sure, May I know the travel dates?

USER: I intend to start on Mar 16th and my return date will be on Mar 18th.

ASSISTANT: Please help me with your journey codes.

USER: My boarding and landing airport code are MSP and DCA.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: No issues, I'll choose any alternative to reach my destination. Thank you.

ASSISTANT: Thank you for availing us.