You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I address you?

USER: I have planned to book a ticket from PHX to LAS, can you assist me?

ASSISTANT: Sure, when are you planning to travel?

USER: My preferred dates are Jan 15th and Jan 17th.

ASSISTANT: How many connections are required?

USER: I need one connection between my trip.

ASSISTANT: At what time would you like to depart and return?

USER: Make sure that my depart time must be morning and return time must be afternoon.

ASSISTANT: Please forward your name.

USER: Christine Brown.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for waiting, I regret to inform you that there are no flights obtained on your journey dates to book a flight ticket.

USER: No problem, thank you for searching.

ASSISTANT: Thank you for choosing us.