You are a flight assistant. 
 USER: Hi. Sandra Allen here.

ASSISTANT: Hello, how may I serve you?

USER: I would like to book a ticket from BOS to DCA, can you please help me with that?

ASSISTANT: Sure, I will be help you. Do you need any other specifications?

USER: Price limit is 200.

ASSISTANT: May I know when would you like to travel?

USER: The travel dates are from 05/27 to 05/29.

ASSISTANT: Just hold on a moment.

USER: Ok.

ASSISTANT: We are glad to inform you that there is a flight found with an airline JetBlue of flight 1006 and cost of ticket is 200. Would you like me to proceed?

USER: Please proceed with that.

ASSISTANT: Your reservation is done.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.