You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Rachel Young here.

ASSISTANT: How can I help you?

USER: Can you book a flight ticket for my airport codes that is from ORD to MSP?

ASSISTANT: Let me know your travelling dates.

USER: The travel dates are from 01 Feb to 03 Feb.

ASSISTANT: Is there any airline preference?

USER: No.

ASSISTANT: Do you have any preference?

USER: I prefer a stopover flight.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: Not a problem.

ASSISTANT: Thank you.

USER: Thank you.