You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am John Green.

ASSISTANT: How can I assist you?

USER: I want to travel from PHX to LAX. Can you book a flight ticket for me?

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

USER: I want to travel in the flight on 11/09 and 11/11.

ASSISTANT: Ok, wait a moment please.

USER: Ok, take your own time.

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

USER: Book the ticket for me.

ASSISTANT: Your ticket has been booked with flight number 1011.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us.