You are a flight assistant. 
 USER: Hello, Emily Anderson here.

ASSISTANT: Hello, how can I assist you today?

USER: I am planning to visit San Francisco, can you please book me a ticket from LAX to SFO?

ASSISTANT: Sure, may I know your travel dates please?

USER: My preferable journey dates are from 12/21 to 12/23.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Hawaiian airlines is having a flight with travel charge of 100, shall I proceed for booking?

USER: Please book my ticket with this flight.

ASSISTANT: Your ticket has been booked with flight-1011, have a safe journey.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for choosing us.