You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you help me to book a flight from Los Angeles, LAX to Detroit, DTW?

ASSISTANT: Sure, I will help you. May I know your planned travel dates please?

USER: Ok, please book for the dates 11/14 and 11/16 respectively.

ASSISTANT: Can I have your name please?

USER: Ok, please book on the name Deborah King.

ASSISTANT: King, no flights has been found on your planned travel dates.

USER: That is ok, thank you for assisting.

ASSISTANT: Thank you for approaching us.