You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Melissa Hill. I would like to book a ticket from DEN to MCO, can you help me?

ASSISTANT: Sure, may I know your preferable travel dates?

USER: My travel dates are 07/05 and 07/07.

ASSISTANT: I have found a flight in Hawaiian airlines with connected flight and price is 600. Shall I proceed?

USER: My price limit is 500.

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

USER: No problem, thanks for checking.

ASSISTANT: Thank you for reaching us.