You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Dennis Wright.

ASSISTANT: Nice to meet you Dennis. How can I help you now?

USER: Actually I want to visit my aunt's house.Can you help me to book a ticket?

ASSISTANT: Sure Dennis, I am here to help you.

USER: I am planning to go from NY-LGA to MI-DTW.

ASSISTANT: Ok, can you please provide me your travel dates?

USER: Sure, my travelling dates are 08/13 to 08/15.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry Dennis, no flight has matched with your dates.

USER: It's fine. Thank you.

ASSISTANT: Your welcome. Thank you for consulting us. Have a good day.