You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am planning to visit Houston, TX-IAH with my friend. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I will help you in booking.

USER: Thank you.

ASSISTANT: Can you please provide your airport codes?

USER: The source code is from Austin, TX-AUS.

ASSISTANT: May I know your name please?

USER: Sure, my name is Karen Johnson.

ASSISTANT: May I know your travelling dates please?

USER: The travelling dates are 08/21 to 08/23.

ASSISTANT: Ok, please wait a moment.

USER: Sure, take your time.

ASSISTANT: There is a flight with flight number 1004 with connection 1, can I proceed with this flight?

USER: May I know the price?

ASSISTANT: I am preffering price limit 100.

USER: Yes, proceed with my booking on the name of Karen Johnson.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing our services.