You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,.

USER: I am Gregory Evans.

ASSISTANT: How can I provide service to you?

USER: I would like to attend for prayers in Old North Church at Boston, BOS. Can you please help me to book a flight ticket with fare 500?

ASSISTANT: Sure, on what dates you would like to travel?

USER: My planned trip dates are 07/23 to 07/25.

ASSISTANT: Ok, from where you want to board?

USER: My source point is IAD.

ASSISTANT: Please wait for a second, I will get back to you with the flight details.

USER: Sure.

ASSISTANT: There is a connecting flight from Spirit airlines and flight number 1028. Shall I proceed?

USER: Please confirm my ticket.

ASSISTANT: Your flight ticket has been processed.

USER: Thanks for your help.

ASSISTANT: Thanks for opting us, have a safe journey.