You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am Barbara Wilson.

ASSISTANT: Nice to meet you Barbara.

USER: I want to book a ticket from DFW to IAH, can you help me?

ASSISTANT: Yes, please I will help you with flight ticket booking. May I know your travel dates please?

USER: My travel dates are Jan 19 and Jan 21.

ASSISTANT: May I know your price limit and connection limit please?

USER: I need a direct flight in my journey. My price limit is 1000.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for your patience. But I am sorry to inform you that presently there are no flights available with us.

USER: No problem, thanks for checking.

ASSISTANT: Thank you.