You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please book me a flight ticket from EWR to PHX?

ASSISTANT: Sure, please share your journey dates?

USER: I will start on Dec 24th and return on Dec 26th.

ASSISTANT: Do you have any specifications?

USER: Yes, my depart time must be in the evening and I need 1 stop over in the middle.

ASSISTANT: Is there any class preference?

USER: I am okay with any class.

ASSISTANT: May I know your good name?

USER: I am Deborah Smith.

ASSISTANT: We found a flight in Frontier airlines, flight number is 1002 with single connection and price is 200 economy class. Shall I proceed?

USER: Fine, please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your service.

ASSISTANT: Thank you for choosing us.