You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Linda Allen this side, I am going for give IELTS exam at Los Angeles, can you help me to book a ticket?

ASSISTANT: Sure, I am here to help you. May I know your airport codes please?

USER: I am going to travel from PHL to LAX.

ASSISTANT: Ok, may I know your travelling dates please?

USER: My test is on 11/04, I want the tickets to be booked on 11/03 and 11/05.

ASSISTANT: Ok, hold on for a moment.

USER: Ensure that connection is limited to 1.

ASSISTANT: I found a flight for you with AA airline and it costs you 300. Shall I proceed?

USER: Yes, please carry on.

ASSISTANT: Your ticket has been booked with 1005 flight number.

USER: Thank you for booking.

ASSISTANT: Welcome.

USER: You are welcome.