You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: I am looking for a flight ticket from PHX to SFO. Can you please help me out?

ASSISTANT: Sure, can you please share your preferable journey dates?

USER: My journey dates are Sept 16 and Sept 18.

ASSISTANT: May I know your name please?

USER: Myself Patricia Brown.

ASSISTANT: Is there any connection limit?

USER: I need single connection flight.

ASSISTANT: Do you have any specifications?

USER: I prefer my return ticket at evening time.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: Ok, thanks for your information.

ASSISTANT: Thank you for reaching us.