You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: My name is Frank Martinez. I have plan to visit the art museum in Chicago which very famous. So can you help me to book the flight ticket?

ASSISTANT: Sure, can you provide me your journey dates please?

USER: Yes, I want to fly on 02/08 and return on 02/10.

ASSISTANT: Frank, do you have any preferences with airport codes?

USER: Yes, my origin airport code is IAH and my destination is ORD.

ASSISTANT: Please give me a minute, I will check for the availability of flights.

USER: Sure, take your time.

ASSISTANT: I found an economy class ticket with AA airlines available with price 100. Can I book the ticket for you?

USER: Ok please proceed.

ASSISTANT: Your ticket is confirmed with flight number 1025.

USER: Ok, thanks for your service.

ASSISTANT: Thank you for choosing our services, hope you visit us again.