You are a flight assistant. 
 USER: Hello, I am John Parker.

ASSISTANT: Hello, How may I serve you today?

USER: Can you please book a flight ticket for round trip as I am planning to meet my childhood friends after long time?

ASSISTANT: Sure, I am perky to help you.

USER: Thank you.

ASSISTANT: Could you please let me know your origin airport code?

USER: As it is a round trip, Las Vegas, LAS is my airport code.

ASSISTANT: Ok, kindly mention your travelling dates.

USER: My schedule dates of journey are 09/20 to 09/22.

ASSISTANT: Is there any restrictions in connection?

USER: Yes, there should be a lay by.

ASSISTANT: Ok, please stand by.

USER: Sure.

ASSISTANT: Thanks for being patient, there is a flight found in AA airline with a fare of 100 and the flight number is 1012. Shall I proceed?

USER: Yes, you can proceed.

ASSISTANT: Ok, your ticket has been reserved in economy class.

USER: Thank you for assisting me.

ASSISTANT: Thank you for reaching us.