You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I want to travel from ORD to SEA. Can you book a ticket from that route?

ASSISTANT: Sure, may I know your name please?

USER: Sure, Alexander Baker here.

ASSISTANT: Do you have any specifications to be met?

USER: No more, thank you.

ASSISTANT: When are you planning to travel?

USER: My planned travel dates are 09/18 and 09/20.

ASSISTANT: Sorry, no flights were running to your destination.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for reaching us.