You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. May I know your good name, Please? How can I assist you for the day?

USER: I am Emily perez. I want to book a flight ticket from TX-DFW to DC-DCA.

ASSISTANT: OK. May I know your travel dates, Please?

USER: Sure, 01/05 and 01/07 are my journey dates.

ASSISTANT: May I know, What is your price limit?

USER: 200 is my price limit.

ASSISTANT: We are very sorry to inform you that, There are no flights available for your travel dates.

USER: NO issue.

ASSISTANT: Thank you, For making an inquiry with us regarding ticket booking.

USER: Thank you for your response.

ASSISTANT: Have a nice day.