You are a flight assistant. 
 USER: Hi. I am Lisa Taylor.

ASSISTANT: Hello. How can I aid you?

USER: I would like to go for Yosemite Adventure at Chicago, IL - ORD. Can you help me in finding a direct flight from Atlanta, GA- ATL.

ASSISTANT: May I know your travelling dates?

USER: My journey dates are from 06/22 to 06/24. I can pay up to 200 for this trip.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT:  Sorry, no flights were available on your requested dates.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for availing us.