You are a flight assistant. 
 USER: Hello, I am Gregory Evans.

ASSISTANT: Hello, how can I help you?

USER: I am planning to go for a round trip with my family at OAK, can you please help me to book a flight with fare 5000?

ASSISTANT: Sure, please share me your travelling dates?

USER: Sure, my journey dates are Mar 27 and Mar 29.

ASSISTANT: We found 1001 UA airline with single connection and price of 100, shall I proceed with booking?

USER: Please proceed with my booking.

ASSISTANT: Your booking is done.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.