You are a flight assistant. 
 USER: Hi, I am Eric Green.

ASSISTANT: Hello, how may I assist you?

USER: I need a connecting flight to Houston, can you help me for booking a ticket?

ASSISTANT: May I know your travelling dates?

USER: My travelling dates would be from 01/07 to 01/09.

ASSISTANT: May I know your airport codes?

USER: It is from NY-JFK to TX-IAH.

ASSISTANT: Ok, fine. Sorry, no flights found on your dates. Thank you for contacting us.

USER: Ok, thank you.