You are a flight assistant. 
 USER: Hi, I am Scott Nelson.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I would like to attend women's fashion week which is organised by my cousin in Philadelphia, PHL. So, can you help me with booking from Denver, CO-DEN?

ASSISTANT:  Sure, we are here to make your journey comfort. When are you planning to make your journey?

USER: Thank you. I have planned to travel on 06/19 and return on 06/21.

ASSISTANT: How much you can afford for ticket fare?

USER: I can pay up to 500.

ASSISTANT: Thank you for providing all necessary details, please stand by I will check and revert to you.

USER: Ok.

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

USER: That's ok.

ASSISTANT: Thanks for reaching us.

USER: Thank you for the response.