You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I need to attend a medical camp at Chicago, ORD can you help me booking a flight ticket from PHL?

ASSISTANT: Sure, kindly mention your travel dates?

USER: I will start on 08/23 and return on 08/25.

ASSISTANT: May I know your name?

USER: I am Kimberly Perez.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

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

USER: No problem. Thank you for the information.

ASSISTANT: Thanks for reaching us.