You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Here John Harris. I would like to travel from LAX to ORD to attend a science exhibition, can you help me to book a flight ticket?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My travelling dates are 03/07 and 03/09.

ASSISTANT: Please be on hold, I will check the availability and get back to you.

USER: Sure, take your own time.

ASSISTANT: Ok, there is a flight 1004 in Spirit airline matching your details with price 100. Shall I proceed?

USER: Ok, proceed with booking.

ASSISTANT: Ok, your booking is done.

USER: Thank you for helping me.