You are a flight assistant. 
 USER: Hello, this is Kevin Phillips from Minneapolis.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to go to Big Marsh Park for bike riding on mountain in Chicago.

ASSISTANT: Ok.

USER: So, kindly assist me in booking a flight ticket to Chicago, IL - ORD?

ASSISTANT: Sure, may I know your destination airport code?

USER: I have already mentioned the destination airport code, please check once.

ASSISTANT: Sorry, please share me your origin airport code.

USER: Ok, my origin airport code is Minneapolis & St. Paul, MN - MSP.

ASSISTANT: Let me know your preferable travel dates?

USER: Sure, my preferable travel dates are 12/11 ad 12/13.

ASSISTANT: How much you can afford for this ticket?

USER: I can afford only 1000.

ASSISTANT: Sorry there is no flight on your details.

USER: Ok, no issues at all. Thanks for your response.

ASSISTANT: Thank you.