You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: My name is Amanda Miller. I want to book a ticket from PHL to PHL.

ASSISTANT: OK, can I know the travelling dates?

USER: It is from 04/18 to 04/20.

ASSISTANT: OK, can I know is there any price limit?

USER: Make sure that the price and connection limit should be 5000 and 0.

ASSISTANT: OK. Please give me a moment.

USER: Ok fine.

ASSISTANT: Sorry to inform you that there is no flight found for your required details.

USER: Thank you for your details.