You are a flight assistant. 
 USER: Hi, I am Andrew Williams.

ASSISTANT: Hello, how may I help you?

USER: I am planning to stay with my mom for few days, so I have to go book flight to go home.

ASSISTANT: Sure, may I know your travelling dates?

USER: I am planning to go after completion of my exams. I need a connecting flight on 10/22 and 10/24.

ASSISTANT: To book a flight I need your airport codes.

USER: Destination: HOU, source: CLT.

ASSISTANT: Ok, please wait for a minute.

USER: Ok.

ASSISTANT: There is a flight with airline: Spirit and flight number:1018 with price 100.

USER: You can proceed with booking.

ASSISTANT: Your ticket has been confirmed.