You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Robert Lee. Please book me a ticket from LGA to LAS to meet my family.

ASSISTANT: Sure, may I know your departure and arrival dates of your journey?

USER: I have planned to travel on 10/03 and 10/05.

ASSISTANT: Please allow me a moment to search for the flight on your travel dates.

USER: Ok.

ASSISTANT: Thank you for waiting, non of the airlines is providing a flight based on your journey dates.

USER: Ok.

ASSISTANT: Thank you for reaching us.

USER: Thank you.