You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I want to visit Flower festival at Dallas & Fort Worth, TX - DFW. Can you please book a ticket on the name of Laura Lewis?

ASSISTANT: Sure, please share me your travelling dates?

USER: My travelling dates are on 05/07 to 05/09.

ASSISTANT: May I know your source airport code?

USER: My source is Las Vegas, NV - LAS.

ASSISTANT: Do you want any halt in between your flight journey?

USER: Yes, I need a halt in between my journey.

ASSISTANT: Please wait for moment.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry there is no flight available on your given journey data.

USER: Ok, no worries. Thank you.

ASSISTANT: Thank you for visiting us.