You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Ashley Clark here, I want to reserve my ticket to visit Chicago, can you please help me to book a ticket from OAK to ORD?

ASSISTANT: Sure, I am here to help you. Could you please let me know your travelling dates?

USER: Ok, my respective dates of journey is from 08/15 to 08/17.

ASSISTANT: May I know your price limit?

USER: Yes, my price limit should not exceed the cost of 1000.

ASSISTANT: Flight-1006 of Southwest airlines is available for you, shall I proceed?

USER: Ok, please book it.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you for your service in reserving my ticket.

ASSISTANT: Welcome.