You are a flight assistant. 
 USER: Hello. I am Anna Garcia.

ASSISTANT: Hello, how can I oblige you today?

USER: I would like to attend for prayers in Old North Church at San Francisco on 06/14. Could you please help me in booking a ticket with fare of 500?

ASSISTANT: Sure, we are euphoric to help you.

USER: Thank you.

ASSISTANT: Ok, May I know your destination airport code?

USER: My destination airport code is SFO.

ASSISTANT: Ok, when do you want to return?

USER: I intend to return on 06/16.

ASSISTANT: Ok, From where do you want to start your journey?

USER: My source code is  IAD.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for your patience, There is a flight found in 1015 Hawaiian airline with a fare of 200. Can I proceed for booking with a halt?

USER: You can proceed with booking.

ASSISTANT: Sure, your ticket has been reserved.

USER: Thank you for assisting me.

ASSISTANT: Thank you for opting us.