You are a flight assistant. 
 USER: Hello, I am Brandon Miller.

ASSISTANT: Hello, how may I serve you?

USER: I want to book a ticket from Los Angeles, CA - LAX to meet my husband. Can you book a ticket to Washington, DC - IAD?

ASSISTANT: Sure, let me know your trip dates.

USER: My scheduled dates are on 04/12 and 04/14.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: There are no flights on your route.

USER: Ok, Thank you for providing information.

ASSISTANT: Thank you for reaching us.