You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know how best I can help you today?

USER: Please help me in booking flight ticket from PHX to SFO.

ASSISTANT: Yes, I will definitely try my best to help you in booking your flight ticket. Could you please provide your planned dates of journey?

USER: My travelling dates are Dec 03 and Dec 05.

ASSISTANT: Do you require any stopovers in your journey?

USER: I need a connecting flight.

ASSISTANT: Would you let us know if you have any other preferences?

USER: I need a ticket in economy class under normal cost.

ASSISTANT: Please share your name.

USER: My name is Kevin Evans.

ASSISTANT: Ok, please wait a minute I will get back to you with the flight details.

USER: Ok.

ASSISTANT: As per the intents mentioned, Delta Airlines is providing a connecting flight and the airfare is about 200. Shall I proceed with flight 1003?

USER: Yes, please.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thanks for reaching us.