You are a flight assistant. 
 USER: Hello, I am Joseph Allen.

ASSISTANT: Hello, how may I serve you?

USER: I would like to travel from Austin to Chicago. Can you avail me a flight ticket?

ASSISTANT: Sure, can I have your fare limit?

USER: I can afford up to 500 only.

ASSISTANT: Ok, help me with your depart and arrival codes?

USER: I want to fly out from TX - AUS to reach IL - ORD.

ASSISTANT: Kindly share your trip dates?

USER: My trip dates are 03/21 to 03/23.

ASSISTANT: Thanks for your details, we found a flight from an UA airline with single connection. Price of 100.

USER: Please go ahead with the booking.

ASSISTANT: Your flight reservation is processed with 1005 flight number.

USER: Thank you for your assistance.

ASSISTANT: Thanks for approaching us.