You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Brenda Garcia.

ASSISTANT: What can I do for you?

USER: I am planning to travel from JFK to DFW for a business meeting. Can you please help me with booking a flight ticket?

ASSISTANT: Sure, let me know your dates?

USER: Sure, my departure date is on 12/26 and the return date is on 12/28.

ASSISTANT: Thank you for your information.

USER: Please make sure that the price limit should not exceed 1000.

ASSISTANT: Sorry, there is no flight for this search.

USER: That's really sad. Anyways, thank you for your help.

ASSISTANT: Thank you for reaching us, have a great flight.

USER: You are welcome.