You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Thomas Harris.

ASSISTANT: How may I help you?

USER: I am looking for a flight from SEA to LGA, hope you are helping me out.

ASSISTANT: May I now your travel dates?

USER: Sure, my travel dates should be 06/23 and 06/25.

ASSISTANT: There is no flight found basis on your details.

USER: It's ok, thanks for your information.

ASSISTANT: Most welcome.