You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Mary Smith.

ASSISTANT: How can I assist you Mary?

USER: Please assist me in reserving a plane ticket from SFO from CLT.

ASSISTANT: Sure, can I know the travel dates please?

USER: My travelling dates are from 03/20 to 03/22.

ASSISTANT: Give me a moment please I will get back to you.

USER: Ok. My ticket fare should be within 500.

ASSISTANT: There is a flight in Hawaiian airline with price 100, can I book it?

USER: Ok, please confirm my ticket.

ASSISTANT: Your ticket has been booked with flight number 1009.

USER: Thank you.

ASSISTANT: You are welcome.