You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I am planning to visit the cathedral of Christ the light in Oakland, OAK.

ASSISTANT: Sure, may I know your dates of journey please?

USER: My journey dates are Oct 19 and 21.

ASSISTANT: Ok, may I know your source airport code please?

USER: I want to start from Chicago, ORD.

ASSISTANT: Do you have any other specifications please?

USER: I need an economy class.

ASSISTANT: Please wait for a moment to check for the availability of a ticket.

USER: Sure, I will wait for your response.

ASSISTANT: There is a connecting flight of fare 100 with the Delta airline, are you ok with this booking?

USER: Please make it confirm.

ASSISTANT: Ok, I have reserved your ticket with the flight number 1008. May I know your name please?

USER: Thanks for the extreme support. Justin Harris here.

ASSISTANT: Thank you for your service.

USER: Thank you.