You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I need to attend a science festival at Minneapolis & St. Paul with my friends. Can you help me with booking?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: When you are planing to travel?

USER: I have planned to travel on 03/03 and again I will be back on 03/05.

ASSISTANT: Could you please tell me your airport codes?

USER: My journey airport code are IAD and MSP.

ASSISTANT: Is there anything else you like to add in your trip requirement ?

USER: Yes, I need a way station in between my journey.

ASSISTANT: Sure, please allow me to check flight, meeting all you requirement.

USER: Sure.

ASSISTANT: May I know your name for our record purpose?

USER: My name is Christine Perez.

ASSISTANT: Sorry, I didn't find any flight at this moment.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for checking with us.