You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am planning to meet my school friend in San Francisco, can you please help me with booking my flight ticket?

ASSISTANT: Sure, may I know you name please to proceed further?

USER: Sure, my name is Raymond Wright.

ASSISTANT: May I know your journey dates please?

USER: I would like to depart on 07/04 and return back on 07/06.

ASSISTANT: Can you help me with your airport codes please?

USER: Please check for the best flight from DEN to SFO.

ASSISTANT: Please give me a minute.

USER: Sure.

ASSISTANT: Raymond, I found a flight with 0 connections and it has price 500. Shall I book the ticket?

USER: Please check for the flight with 1 connection.

ASSISTANT: There are no flights available with your preferences.

USER: Not an issue, thank you for checking.

ASSISTANT: Thank you for reaching us.