You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Can you please help me to book a flight from PHX to SEA?

ASSISTANT: Sure, may I know your travel dates?

USER: My planned to travel on Dec 28th to 30th.

ASSISTANT: Please share me your name.

USER: Sure, I am Anna Adams.

ASSISTANT: Do you have any specifications?

USER: I would like to return in afternoon time.

ASSISTANT: Flight-1019 is available with Spirit airlines having single connection and the ticket costs you 200 only in economy class. Are you comfortable with this flight?

USER: Please proceed.

ASSISTANT: Your ticket has been reserved.

USER: Thanks for your kind service.

ASSISTANT: Thank you.