You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you today?

USER: I'm David Thomas here.

ASSISTANT: Nice to meet you David Thomas.

USER: I want to travel from MN-MSP to TX-AUS, to visit the famous places at Austin. Can you please help me to book a ticket?

ASSISTANT: Sure, I will help you.Can I have your travelling dates?

USER: Sure, my preferable dates are from 02/17 to 02/19. Please make sure that price is 200.

ASSISTANT: Sorry to inform you, we did not found any flight on your provided dates. Do you have any other dates to travel?

USER: No problem. No.

ASSISTANT: Ok, thank you for approaching us.

USER: You are welcome.