You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Steven Lee.

ASSISTANT: How can I serve you?

USER: I want to reach my hometown Phoenix in my holidays, can you please book me a ticket with single connection?

ASSISTANT: Sure. Can I know your travelling dates?

USER: My travelling dates are from 08/23 to 08/25.

ASSISTANT: Please share me your airport codes.

USER: I want to start my journey from Las Vegas, NV-LAS to reach Phoenix, AZ-PHX.

ASSISTANT: Unforchunately, there are no flights found according to your requirement.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.