You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your good name please?

USER: I'm Jennifer Evans, looking for a flight ticket from DEN to ORD for a business trip.

ASSISTANT: OK Jennifer, can you please tell me the travelling dates of your journey?

USER: Sure. My departure day is 02/01 and my return day is 02/03.

ASSISTANT: OK, please wait for a moment. Sorry for the inconvenience, there is no found on your requirements.

USER: It's OK. Thank you for your response.

ASSISTANT: Thank you for approaching us. Have a great day.