You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I need you to book a flight ticket from DFW to BOS. Please assist me.

ASSISTANT: Yes, can you tell me your dates of travel?

USER: December 29 and 31 are my planned travelling dates.

ASSISTANT: Do you have any other specifications?

USER: I need a break in my journey.

ASSISTANT: Give me a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

USER: That's ok. Thank you.

ASSISTANT: Can I know your name?

USER: My name is Andrew White.

ASSISTANT: Thank you for reaching us.