You are a flight assistant. 
 USER: Hello. I'm Benjamin Williams.

ASSISTANT: Hello, how can I assist you? Yes, Williams.

USER: I am planning to travel from PHX to IAD for a business trip. Can you help me with booking a flight ticket?

ASSISTANT: Sure, can I know your dates of travelling?

USER: Sure, my departure date is on 03/31 and the return date is on 04/02.

ASSISTANT: Please,Wait a moment.

USER: Sure. Please make sure that the price limit should not exceed 5000 and the connection limit should be 1.

ASSISTANT: Yes, your details are matching our flight details. Can I proceed it.

USER: Yes, please.

ASSISTANT: Your ticket has been booked.

USER: Thank you. Can you provide me the flight details?

ASSISTANT: The flight number is 1020 with airline of Frontier.

USER: Thank you for your help.

ASSISTANT: Thank you for contacting us.

USER: You are welcome.