You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Joshua Campbell.

ASSISTANT: How can I assist you?

USER: I would like to attend for prayers in the cathedral of Christ at Oakland, OAK.

ASSISTANT: Ok, may I know your travelling dates.

USER: My journey dates are 06/28 and 06/30.

ASSISTANT: Can you please mention your source airport code?

USER: I am planing to board from my nearest airport Las Vegas, LAS.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Ok, here is a flight ticket with fare 100 and 1003 as flight number. Shall I proceed for booking?

USER: Please, proceed.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you for helping me.

ASSISTANT: Most welcome.