You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you aid me to book a ticket from DFW to IAH?

ASSISTANT: Sure, can you please provide your travel dates?

USER:  I would like to travel on Sep 04 and Sep 06 respectively.

ASSISTANT: Do you have any connection limit?

USER: I prefer to travel in connecting flight.

ASSISTANT: May I know your journey timings?

USER: I am flexible with any time.

ASSISTANT: Do you have any other specifications?

USER: I prefer to travel in business class.

ASSISTANT: May I know your name please?

USER: Kevin Adams here.

ASSISTANT: Sorry, there are no flights in this route as per your travelling details.

USER: Not a Issue. Thank you.

ASSISTANT: Thank you for choosing us.