You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you today?

USER: I am Linda Evans, want to travel from PHX to SFO. Can you please help me?

ASSISTANT: Sure, can I know your planned travel dates?

USER: My trip dates are from 11/16 to 11/18.

ASSISTANT: Do you prefer either business class or economy class?

USER: I am fine with any class.

ASSISTANT: Do you have any other preferences?

USER: My return time should be in the evening with 1 connection.

ASSISTANT: Ok, please wait for a minute.

USER: Ok.

ASSISTANT: Sorry, there were no flights found from PHX to SFO.

USER: It's ok, thank you for searching.

ASSISTANT: Thank you for approaching us.