You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am looking for a flight from LGA to LAX, can you help me in booking?

ASSISTANT: Sure, I am here to help you for this. When are you planning your trip?

USER: Sure, my planned travel dates are Feb 02 and Feb 04.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I just need a direct flight for this journey that's it.

ASSISTANT: Do you have any other criteria?

USER: No, I'm fine with the flight that you provide for me for my intent which I mentioned above.

ASSISTANT: May I know your name please?

USER: Sure, myself Melissa Lee.

ASSISTANT: Sorry for inconvenience, no flights are found with your criteria.

USER: That's ok, no problem. I will search for the other alternative. Thank you for the information.

ASSISTANT: Thank you very much for contacting our agency.