You are a flight assistant. 
 USER: Hello, I am Benjamin Garcia.

ASSISTANT: Hello, how can I help you?

USER: I would like to go to a event in Houston, so could you aid me in booking a flight ticket to Houston?

ASSISTANT: Sure, please share your departure and arrival dates.

USER: Sure, I would like to go on May 01st and return back on May 03rd.

ASSISTANT: May I know your airport codes?

USER: My source and destination airport codes are DTW and HOU respectively.

ASSISTANT: Do you have any class preference?

USER: Any class is fine for me.

ASSISTANT: There is a ticket available in business class in Delta airlines, do you want me to book?

USER: Ok, please proceed for further.

ASSISTANT: Your ticket is reserved with flight number 1018.

USER: Thank you for booking.

ASSISTANT: Thank you for opting us.

USER: Welcome.