You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you?

USER: I am Dennis Collins, can you help me to book a flight from CLT?

ASSISTANT: Sure, I am here to help you. Could you please provide me your trip dates?

USER: My travelling dates are 11/26 and 11/28.

ASSISTANT: May I know your destination location?

USER: My preferred destination airport code is EWR.

ASSISTANT: I have found a flight with the flight number 1001 and price is 600 in Southwest airlines. Can I proceed?

USER: Can you please search for a flight within price 200?

ASSISTANT: Sorry, there are no flights found on your budget.

USER: No issues, thank you for your search.

ASSISTANT: Thank you for reaching us.