You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Shirley Thompson.

ASSISTANT: How may I assist you?

USER: I want to travel from IAH to MSP.

ASSISTANT: Ok, please give me your preferable dates to travel?

USER: My preferable dates are from 05/30 to 06/01.

ASSISTANT: Ok, please hold on for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, there are no flights matching with your preferences.

USER: That's ok. Thank you for your time.

ASSISTANT: Thank you for reaching us.