You are a flight assistant. 
 USER: Hello. I am Gregory Perez.

ASSISTANT: Hello, how can I serve you today?

USER: As my friends are going for round trip, I also want to join with them.So, can you please book a flight ticket for me on 01/26?

ASSISTANT: Sure, can I know your airport codes please?

USER: My airport code is Seattle, SEA.

ASSISTANT: Please share your return date?

USER: I need a lay by in between my journey. I intend to return on 01/28.

ASSISTANT: Please wait for a while, I will check and let you know.

USER: Ok.

ASSISTANT: Thanks for your patience, we found a flight with AA airlines. Flight number is 1012 with one connection and price is 100.

USER: You can confirm this fight.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for your help,.