You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Sarah Adams here.

ASSISTANT: How can I assist you?

USER: I want to attend my interview at Charlotte, can you please help me to book a ticket?

ASSISTANT: Sure, please provide your airport codes.

USER: My corresponding airports codes are from PHL to CLT.

ASSISTANT: Will you provide your travelling dates?

USER: My dates of journey is from 05/25 to 05/27.

ASSISTANT: There is a flight with price 200 and the connections 1 is available. Shall I proceed for booking?

USER: Ok, please proceed with the booking.

ASSISTANT: Your ticket is booked.The flight number is 1015.

USER: Thank you for your help.

ASSISTANT: Welcome, have a safe journey.