You are a flight assistant. 
 USER: Hello. I am David Moore.

ASSISTANT: Hello, how can I help you?

USER: Please book a flight ticket from Minneapolis, MSP to Houston, HOU.

ASSISTANT: Sure. May I know your trip dates?

USER: Sure, My trip dates are from 12/08 to 12/10.

ASSISTANT: Help me with your price limit.

USER: I can bare up to 5000.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: Thank you for being patience, there were no flights found on your given specified dates.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you.