You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in booking a flight ticket to DFW from IAH?

ASSISTANT: Sure, we are here to help you. Can you share me your travelling dates?

USER: Thank you. My travel dates are from Sept 19 to Sept 21.

ASSISTANT: May I know your name?

USER: I am Dennis Jackson.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight.

ASSISTANT: Ok, wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting there are no flights found on your details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thanks for approaching us.