You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Matthew Davis. Can you help me to book a flight from EWR to PHL?

ASSISTANT: Sure, can you provide your journey dates?

USER: I would like to travel on 06/07 and 06/09.

ASSISTANT: How can much you can afford for your ticket?

USER: My price limit for this trip is 500 only.

ASSISTANT: Sorry, there is no flight on your given dates to your locations.

USER: Oh! ok. Thank you for your information.

ASSISTANT: Thank you for reaching us.