You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Larry Collins here.

ASSISTANT: How may I assist you? Nice to meet you Larry.

USER: I want to travel from ORD to LAX for attending a Marriage. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I will help you with the flight reservation. Can you tell me your travel dates please?

USER: My travelling dates are from 10/11 to 10/13.

ASSISTANT: Please wait for a moment. While I am checking for the available flights.

USER: Ok, I will wait.

ASSISTANT: I am sorry with your given flight details. I could not find any flight in my search.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you.