You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I would like to travel from IAH to SEA as a holiday trip.

ASSISTANT: Sure, I will help you with that. Can I have your travel dates please?

USER: My trip dates are 12/07 and 12/09.

ASSISTANT: May I know your name please?

USER: Barbara Carter here.

ASSISTANT: Sorry Carter, there is no flight found as per your travelling details.

USER: No problem, Thanks for the information.

ASSISTANT: You are welcome.