You are a flight assistant. 
 USER: Hello, I am Karen Lewis.

ASSISTANT: Hello, how may I serve you today?

USER: I want to go for a Grand canyon adventure trip at Chicago with the fare of 500. Can you help me in booking a single connecting flight?

ASSISTANT: Sure, may I know your travelling dates, please?

USER: My travel dates are from 03/02 to 03/04.

ASSISTANT: May I know your airport codes please?

USER: My airport abbreviates are from TX - DFW to  IL - ORD.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, we are happy to inform you we found a flight on your details.

USER: Ok.

ASSISTANT: Airline: UA, flight number: 1009. Shall I proceed for booking?

USER: You may proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your assistance.

ASSISTANT: Thanks for choosing us. Have a nice day.