You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to celebrate my birthday at Phoenix, could you please help me in booking a ticket?

ASSISTANT: Sure, may I know your journey dates please?

USER: My journey dates are 04/26 and 04/28.

ASSISTANT: Can you please let me know your airport codes?

USER: My airport codes are PHX and PHX.

ASSISTANT: May I know your name please to proceed further?

USER: My name is Gregory Miller.

ASSISTANT: I found a flight with Frontier airlines available with price 100. Shall I book the ticket for you?

USER: Please book my ticket.

ASSISTANT: Your ticket is confirmed and the flight number is 1018.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.