You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: My name is Margaret Evans.

ASSISTANT: Ok.

USER: I am looking to book a flight with single connection, can you help me to book a flight ticket from LGA to OAK?

ASSISTANT: Can you please tell me your travel dates?

USER: My travelling dates are from 10/25 to 10/27.

ASSISTANT: Please wait a moment.

USER: Sure, take your time.

ASSISTANT: Here, I found a direct flight for you and fare is 200.

USER: No, I need a one stop over in my journey.

ASSISTANT: Sorry, I didn't find any flight with your requirement.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: Welcome.