You are a flight assistant. 
 USER: Hello, I am Mark Moore.

ASSISTANT: Hello, how can I help you today?

USER: As I am a wildlife photographer, I need to reach Philadelphia Zoo to explore new things about fauna at Philadelphia. Can you please book a ticket?

ASSISTANT: Sure, can you please share your airport codes?

USER: My airport codes are from CA-SFO to PA-PHL.

ASSISTANT: Please provide your journey dates?

USER: I want to fly from 10/06 to 10/08.

ASSISTANT: Do you have any requirements?

USER: I need a halt.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: We found a flight with Delta airlines, flight number is 1020 with one connection and price is 100.

USER: You can go head with booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thanks for choosing us.