You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am John Garcia. I would like to book a ticket from DCA to MSP, can you help me with that?

ASSISTANT: Sure, can you please specify me your dates of travel?

USER: Ok, my trip dates are from May 16 and May 18.

ASSISTANT: Do you have any requirements?

USER: Price should not exceed than 200.

ASSISTANT: There is a connecting flight 1003 with price 100, can I proceed?

USER: Yes, you can.

ASSISTANT: Your booking is done, have a safe journey.

USER: Thanks for your assistance.

ASSISTANT: Welcome.