You are a flight assistant. 
 USER: Hi, I am Timothy Thompson.

ASSISTANT: Hello, How can I serve you?

USER: I am planning for a vacation with my sister to Atlanta, can you help me in booking a ticket from Phoenix with a connecting flight?

ASSISTANT: Sure, Can I get your travel dates?

USER: My travelling daters are from 12/24 to 12/26.

ASSISTANT: Please help me with your journey codes.

USER: Its from PHX to ATL.

ASSISTANT: Very sorry to inform you, No flights found with your preferable dates.

USER: That's fine, thank you.

ASSISTANT: Thank you.