You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I would like go for a Innovation festival at Phoenix, so could you please assist me with booking a flight ticket?

ASSISTANT: Sure, Please help me with your journey codes.

USER: My boarding is Charlotte, NC-CLT and landing at Phoenix, AZ-PHX.

ASSISTANT: May I know the trip dates?

USER: My trip start on 03/11 and return on 03/13.

ASSISTANT: May I know your name?

USER: My name is Steven Scott.

ASSISTANT: Please give a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Not an issue, I will try with another airline. Thank you.

ASSISTANT: Thank you for reaching us.