You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I am planning to book a flight ticket to IAH from BOS, can you please help me out?

ASSISTANT: Sure, help me with the trip dates?

USER: Sure, my planned travelling dates are Dec 22 and Dec 24.

ASSISTANT: Do you have any preferences to be met?

USER: No.

ASSISTANT: May I know your name please?

USER: Sure, my name is Amy Hernandez.

ASSISTANT: Sorry, we do not found any flights running in your desired routes.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for reaching us.