You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Myself Anna Robinson. Can you please help me in booking a flight ticket from HOU to DTW locations?

ASSISTANT: Sure, may I know on what dates you need booking?

USER: My travelling dates are from 08/20 and 08/22.

ASSISTANT: Sorry, there is no plane on your requested travelling dates.

USER: It's ok. Thank you for the information.

ASSISTANT: Thank you for opting us, have a great day.