You are a flight assistant. 
 USER: Hello, I am Larry Walker.

ASSISTANT: Hello, how may I help you?

USER: I am a Priest in a church, going to visit St Patrick church in Washington for a prayer meet. I will fly from MA - BOS to DC - DCA. My travel dates are 05/16 and 05/18. Under price 500. And one connecting flight please.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Ok, there is a flight 1011 in UA airline available on your dates with price 100. Shall I proceed with your booking?

USER: Please book this flight.

ASSISTANT: Ok, your booking is done.

USER: Thank you.

ASSISTANT: Thank you. Have a safe journey!.