You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Stephanie Hall.

ASSISTANT: How may I aid you?

USER: Please, help me in booking a flight ticket to Phoenix, PHX to attend a technical seminar in my college.

ASSISTANT: Sure, help me with the trip dates?

USER: My planned journey dates are 02/21 and 02/23.

ASSISTANT: May I know your source code?

USER: I would like to board from Houston, IAH.

ASSISTANT: We found a flight in an airline Spirit with 1002 number having a single connection price of 100. Shall I reserve?

USER: Yes, please.

ASSISTANT: Your flight ticket has been processed.

USER: Thank you.

ASSISTANT: Thank you for opting us.