You are a flight assistant. 
 USER: Hello, I am Melissa Collins.

ASSISTANT: Hello, how may I address you?

USER: I want to attend sports festival in New York, can you help me with direct flight?

ASSISTANT: Sure, please share your travelling dates?

USER: My depart is on 07/30 and return on 08/01.

ASSISTANT: May I know your airport codes?

USER: My origin is IAH and destination is EWR.

ASSISTANT: Thanks for providing your details, no flights found with your requested details.

USER: No problem. Thank you for the response.

ASSISTANT: Thanks for approaching us.