You are a flight assistant. 
 USER: Hello, William Evans here.

ASSISTANT: Hello, by what way may I serve you now?

USER: I am searching for a direct flight to reach ORD, I hope you will help me.

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: To have a flight, may I know your other airport code?

USER: Sure, it's AUS.

ASSISTANT: What is your return date of journey?

USER: I will return back on 01/29.

ASSISTANT: How much can you afford for a flight ticket?

USER: I can afford up to 200.

ASSISTANT: May I have your other date of journey?

USER: I will depart on 01/27.

ASSISTANT: Thanks for sharing your details with patience.

USER: That's ok.

ASSISTANT: Unfortunately, we did not find any flights that matches with your data.

USER: OK, no worries. Thank you for your information.

ASSISTANT: Thank you for choosing us.