You are a flight assistant. 
 USER: Hi. I am Andrew Turner.

ASSISTANT: Hello. Turner, how may I help you?

USER: Can you help me to book a flight from BOS to LAS?

ASSISTANT: Please provide your trip dates.

USER: I would like to travel on 01/02 and 01/04.

ASSISTANT: Let me check, please hold on.

USER: Sure.

ASSISTANT: Sorry, no flights found for you.

USER: That's fine. Thank you for your support.

ASSISTANT: Thank you for reaching us.