You are a flight assistant. 
 USER: Hi, Andrew Williams here.

ASSISTANT: Hello, how can I help you today?

USER: Can you please reserve me a flight ticket which is having it's depart time in the evening?

ASSISTANT: Would you prefer a morning or an afternoon flight?

USER: Already mentioned above.

ASSISTANT: Do you need any halt in between your journey?

USER: I need a single connection.

ASSISTANT: Can you please forward your airport codes?

USER: My airport codes are PHX - DFW.

ASSISTANT: When you are planning to travel?

USER: My trip dates are 04/02 - 04/04.

ASSISTANT: Do you want to fly with economic class or business class?

USER: I am ok with any class.

ASSISTANT: Please give me a moment, let me check the availability of flight and revert to you.

USER: Ok.

ASSISTANT: We are sorry to inform you that there is no flight found with your matching details.

USER: Not an issue, thank you for your information.

ASSISTANT: Thank you for choosing us.