You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Alexander Martin here.

ASSISTANT: How can I assist you at this moment?

USER: I want to meet my friend on his birthday, please book my ticket from SFO to DTW.

ASSISTANT: Sure, I will help you with this. Can you please provide your journey dates to proceed further?

USER: My trip dates are 12/09 and 12/11.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Frontier airlines with one halt on your route and the ticket costs 100, shall I book your ticket?

USER: Please book my ticket.

ASSISTANT: Alexander Martin, your ticket is booked in flight number 1007.

USER: Thank you.

ASSISTANT: Thank you and have a safe journey.