You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you?

USER: I am planning to visit Tempe Town Lake in Phoenix, will you help me in flight booking?

ASSISTANT: Sure, can you please provide your travel dates?

USER: Sure, my travelling dates from 12/21 to 12/23.

ASSISTANT: Can I know your travel codes?

USER: Sure, my origin from NC - CLT and my destination to AZ - PHX.

ASSISTANT: Do you have any other requirements?

USER: I want a single connection and my price limit is 1000.

ASSISTANT: To proceed further may I know your name please? Thank you for providing details, please wait for a while.

USER: My name is William Miller.

ASSISTANT: Sorry for the inconvenience we did not found any flight matching your preferences.

USER: Ok, not an issue. Thank you, for your better service.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thank you.