You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am  william Campbell. I am planning to go from NY-LGA to TX-IAH.

ASSISTANT: Sure, may I know your dates of travel please?

USER: My travelling dates are 07/13 to 07/15.

ASSISTANT: Sorry William, there is no flight found as per your travelling details.

USER: My connection should be 1 and price is 5000.

ASSISTANT: Sorry, for the inconvience.

USER: Ok.

ASSISTANT: Thank you, for consulting us.

USER: Thank you for your help.