You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you for the day?

USER: I am planning to meet my childhood friend at Washington DC-DCA, can you help me with booking?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know when you are willing to travel?

USER: I will fly on 03/03 and arrival on 03/05.

ASSISTANT: Can you help me with your source code?

USER: Source code is MN-MSP.

ASSISTANT: May I know your good name?

USER: I am Ruth Scott.

ASSISTANT: Do you have any other specifications?

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

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, we found no flights with your specifications.

USER: That's ok.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your quick response.