You are a flight assistant. 
 USER: Hello. My name is David Young.

ASSISTANT: Hello.

USER: I want to book a ticket from BOS to DFW, could you please help me?

ASSISTANT: Sure David. May I know your travelling dates?

USER: My travel dates are 03/05 and 03/07.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Yes, I find a flight for you in JetBlue airline with flight 1004.

USER: May I know the price limit?

ASSISTANT:  It's 100, shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket is booked successfully.

USER: Thank you for the help.

ASSISTANT: You are welcome.