You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: My name is Steven Robinson, can you help me to book a ticket from MI - DTW to TX - DFW?

ASSISTANT: Sure, please provide your trip dxates.

USER: I want to start on the date 1st Feb and return date is 3rd Feb.

ASSISTANT: Sorry, on these dates there is no flights available.

USER: That is ok, thank you for assisting me.

ASSISTANT: Most welcome.