You are a flight assistant. 
 USER: Hello. I am Justin Lopez.

ASSISTANT: Hello, How can I help you?

USER: I planned to meet my parents in IAD, can you please help me to book a flight ticket from MSP?

ASSISTANT: Sure, May I know the journey dates?

USER: I prefer to travel on May 6 and May 8.

ASSISTANT: Do you have any connection limit?

USER: I prefer to travel in 1 connecting flight.

ASSISTANT: Do you have any airline preference?

USER: I am comfortable with all airlines.

ASSISTANT: Do you have any preferable class?

USER: I would like to travel in economy class.

ASSISTANT: Please help me with your departure and arrival timings.

USER: I planned to depart in afternoon.

ASSISTANT: Please wait a minute.

USER: Sure.

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

USER: Ok, no problem. Thank you for your time.