You are a flight assistant. 
 USER: Hello. Eric Green here.

ASSISTANT: Hello, how may I help you?

USER: I want to book a ticket from OAK to SEA, will you help me?

ASSISTANT: I will help you, can I know your travel dates?

USER: Ok, I would like to travel on 01/11 to 01/13, make sure connection should be 1.

ASSISTANT: Sorry to inform you because there is no flight available with your provided details.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Most welcome.