You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I am Edward Wilson, want to travel from EWR to SEA. Can you help me in this?

ASSISTANT: Sure, Can you please let me know your travelling dates?

USER: My travelling dates are from 07/19 to 07/21.

ASSISTANT: I am really sorry to say there are no flights on your route.

USER: It's ok, thank you.

ASSISTANT: Your welcome.