You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name please?

USER: I am Stephanie Martinez.

ASSISTANT: Yes Stephanie, how may I help you today?

USER: I am planning to celebrate flowers festival in Boston. Will you help me in booking a flight ticket?

ASSISTANT: Sure, we will help you on that. Do you have any price limit?

USER: Yes, my price limit is 200.

ASSISTANT: Ok, please let me know your journey dates.

USER: I would like to fly on 12/03 and return date on 12/05.

ASSISTANT: May I know the exact airport code of Boston?

USER: Sure, my destination to MA - BOS.

ASSISTANT: From which airport are you planning to start your journey?

USER: My source from Minneapolis MN - MSP.

ASSISTANT: Stephanie, please be on hold I will let you know the availability.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no flight available on your route.

USER: Not an issue. Thanks for your service.

ASSISTANT: Thank you for choosing us.