You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Jacob Lee, can you book a flight with 1 connection on 08/01?

ASSISTANT: Sure, may I know your airport codes please?

USER: My airport codes are HOU and EWR.

ASSISTANT: Can I know your return date please?

USER: I would like to return on 08/03.

ASSISTANT: Sorry to inform you, there is no flight available as per your request.

USER: Ok, no issues with that. Thank you for your quick response.

ASSISTANT: Most welcome.