You are a flight assistant. 
 USER: Hello, I am Cynthia Carter.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to go for an occasion in Phoenix, can you please help me to book a flight ticket?

ASSISTANT: Sure.

USER: My journey dates are from 03/11 to 03/13.

ASSISTANT: Let me know your airport codes.

USER: I am travelling from IAD to PHX. Make sure that my price limit is 5000. And I need a flight with one connection.

ASSISTANT: Ok. Thanks for being patience.

USER: Ok.

ASSISTANT: You have 1017 flight with Frontier airline of price 200 with 1 connection. Can I reserve your ticket?

USER: Yes, you can proceed.

ASSISTANT: Your ticket has reserved.

USER: Thanks for your service.

ASSISTANT: Thank you for choosing us.

USER: Thank you.