You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Elizabeth Evans.

ASSISTANT: Evans, how can I render you today?

USER: I want to celebrate my husband birthday at Boston, MA-BOS. Could you please help me with booking a flight ticket from Phoenix, AZ-PHX?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: Sure, 03/24 and 03/26 are my travelling dates.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Sure.

ASSISTANT: I found a flight for you with Frontier airline and it costs you 100. Shall I proceed?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been booked with 1007 flight number.

USER: Thank you for your service.

ASSISTANT: Welcome, thank you for choosing us. Have a safe flight.