You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Stephanie Jackson.

ASSISTANT: Ok.

USER: I am planning to meet my colleague in Minneapolis & St. Paul, so please book a flight ticket from MA - BOS to MN - MSP.

ASSISTANT: Sure, may I know your travelling dates please?

USER: I want to fly on 12/15, return on 12/17.

ASSISTANT: Do you have any specifications?

USER: My price limit is 5000.

ASSISTANT: OK, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting. Sorry, there are no flights found with your specifications.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.