You are a flight assistant. 
 USER: Hello, I'm Rachel Garcia.

ASSISTANT: Hello, how can I help you?

USER: I want a flight ticket from DFW to BOS, can you please book a ticket if it is available?

ASSISTANT: Sure, when would you like to travel?

USER: I would like to travel on 12/15 and return on 12/17.

ASSISTANT: There is a direct flight available with your request.

USER: Please make sure the price should not exceed 500 with single connection.

ASSISTANT: Sorry, there is no flight with 1 connection.

USER: That's ok. Thank you.

ASSISTANT: Thank you and have a nice day.