You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

USER: I want to book a ticket from BOS to DFW, can you help me?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My travel dates are 08/23 and 08/25.

ASSISTANT: May I know your name?

USER: Myself Samantha Gonzalez.

ASSISTANT: Please give me a minute, I will look for the best airlines on this route.

USER: Ok.

ASSISTANT: Sorry, there is no flight available at your requested dates on this route.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for contacting us, have a nice day.