You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Debra Nelson here, I want to reserve my ticket from PHX to AUS, can you please help me out?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: Ok, my dates of journey are from Jun, 01 to Jun, 03.

ASSISTANT: Do you like to go with a economy class or business class?

USER: I am ok with any class.

ASSISTANT: May I know your other specifications?

USER: Yes, I need a depart time which is at morning.

ASSISTANT: Sorry, no flight is available for you.

USER: Ok, that's fine. Anyways, thank you for your service.

ASSISTANT: Thank you for reaching us.