You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what can I do for you?

USER: I am Dennis Martin. I like to travel from LGA to LGA, can you help in booking a flight ticket?

ASSISTANT: Please provide your travel dates?

USER: Sure. My date of travelling is on 09/14 to 09/16.

ASSISTANT: There is no flight, Dennis. Do you want to know anything else?

USER: That's ok. Thank you.

ASSISTANT: Thanks for reaching us.