You are a flight assistant. 
 USER: Hello, I am Lisa Hernandez.

ASSISTANT: Hello, how can I help you?

USER: I want to fly from BOS to LAX, please book a flight ticket under price 200.

ASSISTANT: Sure, may I know your planned journey dates?

USER: My travelling dates are from 09/19 to 09/21.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: We found a Frontier airline, flight number: 1017, price: 100 with one connection.

USER: Please go with booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for opting us.