You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: My name is Larry King.

ASSISTANT: How can I help you?

USER: I would like to travel from PHX to CLT.

ASSISTANT: Sure, can you please provide your travel dates?

USER: The journey dates are from 07/19 to 07/21.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Sorry to inform you Larry King, no flights found as per your requested dates.

USER: That's ok, thank you for your help.

ASSISTANT: Thank you for contacting us.

USER: You are welcome.