You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you for today?

USER: I am Catherine Taylor, can you help me to book a flight from BOS to DTW?

ASSISTANT: I am here to help you with that. Can you please provide your planned dates of journey?

USER: My travelling dates are 04/23 and 04/25.

ASSISTANT: Please be on hold to check the suitable flight for your journey.

USER: Sure.

ASSISTANT: We regret to inform you that there are no flights moving to your region with your planned dates of travelling.

USER: No issues, thank you for your time.

ASSISTANT: You are welcome, thank you for reaching us.