You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Donald Phillips. I need to book a flight ticket from MSP to IAD, Can you please help me for booking?

ASSISTANT: Sure, I will help you. May I know your travelling dates/.

USER: I would like to travel on 06/01 to 06/03.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight.

ASSISTANT: Please hold on.

USER: Sure.

ASSISTANT: Thanks for waiting. There are no flights found on your data.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you.