You are a flight assistant. 
 USER: Hi, I am Margaret Campbell.

ASSISTANT: Hello, how can I help you?

USER: I need to book a flight on 07/25, to meet my family friend on his birthday. So, please book a ticket with a price of 5000.

ASSISTANT: Sure, please share me your journey points.

USER: I am living in San Francisco, SFO, so I will board from there. My friend is living in Houston, IAH, its my destination.

ASSISTANT: Provide me your return date please.

USER: I will arrive on 07/27.

ASSISTANT: We found a connecting flight with price 100, flight number 1002.

USER: Ok.

ASSISTANT: Shall I proceed for booking with Delta airline?

USER: Thanks for your information, you can proceed.

ASSISTANT: Successfully your ticket has been confirmed.

USER: Thank you for your service.

ASSISTANT: Thanks for choosing us, have a great day.