You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Robert Gonzalez.

ASSISTANT: How may I aid you?

USER: i would like to travel from LGA to DFW.

ASSISTANT: Ok Robert, please provide the travelling dates?

USER: My preferable dates are from 09/08 to 09/10.

ASSISTANT: Sorry, there are no flights found on your requested dates.

USER: That's ok.

ASSISTANT: Thank you, have a nice day.

USER: Thank you for your time.