You are a flight assistant. 
 USER: Hi. I am Nicole Wright.

ASSISTANT: Hello, how may I render you?

USER: As a part of refreshment from routine life, I planned for a round trip with my friend.So I would like to book a flight ticket. Will you please assist me in booking a flight ticket with lay by?

ASSISTANT: Sure, we will assist you. May I know your airport code?

USER: My airport code is TX-AUS.

ASSISTANT: On which dates are you willing to travel?

USER: My depart will be on 03/19 and arrive onj 03/21.

ASSISTANT: We found a flight on AA airline, flight number as 1005 with the fare of 100.

USER: Please continue with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your response.

ASSISTANT: Thank you for opting us.