You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you help me to book a flight ticket from DFW to LAS?

ASSISTANT: Sure, could you please share me with your dates of journey?

USER: July, 8 and July, 10 are my journey dates.

ASSISTANT: May I know your name please?

USER: Kimberly Garcia here.

ASSISTANT: Do you have any other specifications please?

USER: I need to travel in business class only.

ASSISTANT: Ok, please wait for a mean while.

USER: Sure.

ASSISTANT: Sorry Garcia, there is no flight found as per your name to cancel it.

USER: That's ok, thank you for the information.

ASSISTANT: You are welcome.