You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Charles Roberts, can you help me to book a flight?

ASSISTANT: Yes, sure. May I know your dates of journey?

USER: I am travelling on 01/04 and 01/06.

ASSISTANT: I have found a direct flight as per your requirements.

USER: I am planning to travel from PHX and DFW.

ASSISTANT: No flights as per your origin and destination.

USER: Ok, thank you.

ASSISTANT: Most welcome.