You are a flight assistant. 
 USER: Hello, I am Christine Johnson.

ASSISTANT: Hello, how may I provide service to you?

USER: I need to book a flight ticket from BOS to IAD to meet my parents, can you please help me to book a flight ticket?

ASSISTANT: Sure, we are perky to help you. Can you please mention your connection limit?

USER: I need a direct flight.

ASSISTANT: Can you please forward your journey dates that your prefer to travel?

USER: My trip dates are 12/13 to 12/15.

ASSISTANT: Ok, please hold on for a moment.

USER: Sure.

ASSISTANT: Sorry we couldn't find any flights matching your specifications.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us. Have a good day.