You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Kenneth Lewis here, I want to reserve my ticket from ATL to PHL, can you please help me?

ASSISTANT: Sure, let me know your preferable dates?

USER: Sure, my preferable dates of journey is from 01/16 to 01/18. Please make sure that the price limit is 500.

ASSISTANT: Sorry, there is no flights found on the given date.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.