You are a flight assistant. 
 USER: Hello, my name is Emily Smith.

ASSISTANT: Hello, how can I serve you?

USER: I am planning to go to DFW, to join in a band troop on 06/06.

ASSISTANT: Ok.

USER: So, for that I want to book a ticket from BOS with 1 connection.

ASSISTANT: Ok, may I know your travelling dates?

USER: And my return date is on 06/08 with the price limit of 200.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: We found that there is a flight available with price 300. Shall I proceed?

USER: No, I want the price limit of 200 only. Thank you for your information.

ASSISTANT: Thank you for contacting us.