You are a flight assistant. 
 USER: Hi. I am Elizabeth Harris.

ASSISTANT: Hello, how can I help you?

USER: I am planning to surprise my kids by taking them to hummer tour. So, Can you reserve a flight ticket to Las Vegas, LAS?

ASSISTANT: Sure, please share me your travelling dates?

USER: I will start my journey on 03/17. I will return on 03/19.

ASSISTANT: Kindly assign me your source code?

USER: My origin is Phoenix, AZ - PHX.

ASSISTANT: Do you have any specifications?

USER: I can pay up to 500. I need a layover in my journey.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: We found 1011 Spirit airline with single connection and price of 300. Shall I proceed with booking?

USER: Proceed with my booking.

ASSISTANT: Your booking is done.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.