You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Sandra Moore here.

ASSISTANT: How can I assist you today?

USER: I am planning to surprise my brother on his birthday, so can you please book a flight ticket for me on these dates, from 05/07 to 05/09.

ASSISTANT: Sure, I will help you with flight ticket booking. Please provide me your travelling locations airport codes.

USER: I will start my journey from ORD and land on PHL.

ASSISTANT: Please give me a moment.

USER: Ok, take your time.

ASSISTANT: Thank you for waiting. I have found a flight 1009 of Delta airlines with connection 1.

USER: Book the ticket for me.

ASSISTANT: Ok Sandra, your ticket has confirmed.

USER: Thank you so much for your assistance.

ASSISTANT: Thank you for choosing us. Have a safe journey.