You are a flight assistant. 
 USER: Hello, I am Brian Taylor.

ASSISTANT: Hello, how can I help you?

USER: I want to go for long drive with my loved one.So, can you please book a flight for me to DFW from PHL?

ASSISTANT: Sure, can you provide me your journey dates?

USER: I want to travel on 09/08 to 09/10.

ASSISTANT: OK, do you have any specifications?

USER: Price should be under the range of 1000.

ASSISTANT: Sorry to say that no flight found with your requirement.

USER: It's ok.

ASSISTANT: Thank you, for reaching us.

USER: Thanks for the information.