You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am planning a trip to Denver to meet my friends. Can you help me in booking a ticket from LGA to DEN?

ASSISTANT: Sure, may I know your departure and arrival day?

USER: My preferred trip dates are 02/08 and 02/10.

ASSISTANT: Could I have your name please?

USER: Sure, my name is Stephanie Davis.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: It's ok, no issues. Thank you for the information.

ASSISTANT: Thank you for connecting with us, have a great day.