You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you please check for the flights from IAH to JFK?

ASSISTANT: May I know your good name?

USER: My name is Emma Wilson.

ASSISTANT: Can you help me with your travelling dates?

USER: My journey dates are from Dec 11 to Dec 13.

ASSISTANT: Is there any connection limit?

USER: Yes, I need 1 connection.

ASSISTANT: Do you have any other requirements?

USER: I prefer an economy class flight with a normal cost airlines only.

ASSISTANT: There were no flights found with your required dates to travel.

USER: Oh! That's very sad to know. Anyways, thank you for checking.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.