You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am John Hernandez.

ASSISTANT: How can I assist you?

USER: I need to book a flight ticket from PHL to OAK, Can you please help me for booking?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: When you are going to start your journey?

USER: I would like to start on 01/06.

ASSISTANT: Do you have any specifications to meet?

USER: I need a connecting flight with fare of 500.

ASSISTANT: What is your return date?

USER: My intend return on 01/08.

ASSISTANT: Please wait a minute, I will check the flights and let you know the details.

USER: Sure, make it fast.

ASSISTANT: Thanks for waiting. We found a flight with 1 connection of price 300 in UA airline. May I reserve your ticket with 1001 flight?

USER: Ok, proceed for booking.

ASSISTANT: Booking has been done.

USER: Thanks for your information.

ASSISTANT: Thank you for approaching us.