You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I am Catherine Gonzalez. I have to attend a Live Concert at Las Vegas, could you please help me with booking a flight ticket from DFW to LAS?

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable dates of travelling?

USER: I would like to depart on July 7th and return on July 9th.

ASSISTANT: Is there any additional requirements do you want?

USER: I am looking for a connecting flight.

ASSISTANT: Please wait a moment to check the flights on your route.

USER: Sure, take your time.\.

ASSISTANT: We regret to inform you that, there are no flights moving to your region with your planned dates of travelling.

USER: Ok, not an issue. Thank you for the information.

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