You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am planning to attend a Sports Live Event in SFO, so please help me in booking a flight ticket from DEN.

ASSISTANT: Sure, please provide your travel dates.

USER: I want to fly on May 16 and return on May 18.

ASSISTANT: Do you have any preferences?

USER: I would like to prefer normal cost airline.

ASSISTANT: Do you have any other preferences?

USER: I need a single connection.

ASSISTANT: May I know your name?

USER: My name is Ryan Robinson.

ASSISTANT: sorry, I did not find any flights for you.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching us.