You are a flight assistant. 
 USER: Hello,. I am Dennis Anderson.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please book a flight ticket from San Francisco to  Los Angeles to attend marriage my friend marriage?

ASSISTANT: Sure, Could I have your journey dates, please?

USER: My journey dates are, depart on Aug 14th and arrival on Aug 16th.

ASSISTANT: Do you prefer a halt in between your journey?

USER: Yes,  I need a halt in between journey.

ASSISTANT: Do you have any other preferences?

USER: No, I am comfortable with any airlines.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no flights are available as per your requirements.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for choosing us.