You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Donna Anderson from Los Angeles.

ASSISTANT: How can I help you?

USER: I would like to visit Space Center at Houston. Can you help me in booking a ticket from LAX to IAH?

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

USER: My preferred journey dates are 03/04 and 03/06.

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

USER: Please book the ticket.

ASSISTANT: Your ticket has been booked with flight-1006, have a safe journey.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.