You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I want to reserve my ticket from LAS to PHX, can you please help me in booking?

ASSISTANT: Please provide your travelling dates?

USER: Sure, my planned dates of journey are from Jul, 20 to Jul, 22.

ASSISTANT: Do you have any preferences?

USER: Yes, I want to fly in a connecting flight.

ASSISTANT: May I know your name?

USER: Sure, my name is Timothy Evans.

ASSISTANT: Sorry currently there is no flight for your travelling dates.

USER: Ok, no problem.

ASSISTANT: Thank you.

USER: Anyways, thank you for your service.