You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Susan Thompson, can you help me to book a flight ticket from LGA to DTW?

ASSISTANT: Sure, I am here to help you. May I know your trip dates?

USER: Ok, my travel dates are 05/08 and 05/10.

ASSISTANT: Sorry Susan, there is no flight in your dates.

USER: Not a problem. Thank you for assisting me.

ASSISTANT: Thank you for reaching us.