You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: This is Melissa Carter. I need your help for booking a flight ticket from NY-LGA to NY-JFK,can you do that?

ASSISTANT: Sure, could you please provide the travel dates?

USER: My travelling dates are 01/18 to 01/20. I need 1 connection limit and price is 200.

ASSISTANT: Ok, please wait a moment.

USER: OK.

ASSISTANT: Sorry for the inconvenience, cannot found any flights under your requirements.

USER: Thank you for your immediate response.

ASSISTANT: You are welcome. Have a nice day!.