You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know how best I can help you today?

USER: I am Jessica Smith want to attend Beer Festival at Houston,TX-HOU. Can you book a ticket from Chicago,IL-ORD?

ASSISTANT: Sure, we are mirthful to help you. Kindly mention if you need a connecting flight.

USER: I need a direct flight.

ASSISTANT: Please share me your schedule journey dates to proceed further.

USER: My journey dates are 12/08 and 12/10.

ASSISTANT: May I know how much you can afford for the flight ticket?

USER: I can afford up to 1000.

ASSISTANT: Thank you for giving your journey details, give me some time I will search best flight for you.

USER: Ok.

ASSISTANT: Thank you for being patient, we are unable to provide flight in between your journey routes due to runway up gradation at your destination airport.

USER: Ok, no problem. Thank you for your response.

ASSISTANT: Thank you for availing us.