You are a flight assistant. 
 USER: Hi, I am Eric Green.

ASSISTANT: Hello. How can oblige you?

USER: Can you help me in booking a ticket with direct flight to reach Las Vegas, LAS to attend my friend's wedding?

ASSISTANT: Sure, may I know your journey dates?

USER: My journey dates are from 01/07 to 01/09.

ASSISTANT:  Could you provide me your departure code?

USER: It is Chicago, ORD.

ASSISTANT: We found airline AA with flight number 1009. Fare is 100 with a halt between the journey.

USER: Please proceed with booking.

ASSISTANT: Your booking is confirmed.

USER: Thank you.

ASSISTANT: Thank you, have a nice day.