You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates?

USER: Sure, I planned my trip on the dates May 5 and May 7.

ASSISTANT: Ok, please share your name.

USER: Myself Nancy Allen.

ASSISTANT: Let me know your connection limit.

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any specification?

USER: No, other specifications. Thank you for asking.

ASSISTANT: Sorry, no flights are available on your preferable travel dates.

USER: No issue, anyway thank you for checking.

ASSISTANT: Thank you for reaching us, have a nice day.