You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you out?

USER: I am Ruth Scott. Please assist me in booking a flight ticket which returns in the afternoon.

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: I want to start my journey on July 17th and return on July 19th.

ASSISTANT: Can I know your airport codes please?

USER: My airport codes are from BOS to MSP.

ASSISTANT: Do you have any specifications limit?

USER: Yes, I need a normal-cost airline. I want a lay by in between my journey.

ASSISTANT: Sorry, there are no flights found in our database.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.