You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be there for you?

USER: I want to go to Denver next week so can you please help me in flight ticket booking process from SFO to DEN?

ASSISTANT: Sure, please let me know on what dates are you interested to travel?

USER: Thank you for your response, I want to take off on July 01 and book my return ticket also on July 03.

ASSISTANT: What is your maximum connection limit?

USER: I will prefer direct flight.

ASSISTANT: Any other requirements to be met?

USER: No.

ASSISTANT: Please forward your name.

USER: Sure, my name is William Gonzalez.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Thank you for waiting, I regret to inform you that there are no flights obtained on your journey dates to book a flight ticket.

USER: Oh! It's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for opting us.