You are a flight assistant. 
 USER: Hi, I am Rebecca Anderson.

ASSISTANT: Hello, how can I help you today?

USER: I would like to book a flight ticket from Chicago to meet my parents after a long time. Would you please help me in booking a flight ticket with fare 5000?

ASSISTANT: Sure, kindly mention your airport codes?

USER: My origin point is IL-ORD and destination point is NY-JFK.

ASSISTANT: Can you please mention your travel dates?

USER: My departure and arrival dates are 08/28 and 08/30.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say, no flights found with your requirement.

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

ASSISTANT: Thanks for reaching us, have a good day.