You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Helen Thomas and I want to book a ticket. Will you please help me?

ASSISTANT: Sure, can I know the travelling details?

USER: I want to travel from LAX to LGA.

ASSISTANT: OK, can I know the travelling dates?

USER: My travelling dates are 10/23 and 10/25.

ASSISTANT: OK, can I know is there any price limit?

USER: My price limit is 500.

ASSISTANT: OK.

USER: Do you have any flight matching with these details?

ASSISTANT: I had found a flight for you. The flight number is 1007 of spirit airlines. Can I proceed with the booking?

USER: OK,thank you. Confirm my booking.

ASSISTANT: OK. Have a safe journey.

USER: Thank you.