You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am George Lopez.

ASSISTANT: How may I aid you now?

USER: I am a foodie and would like to visit food festival in DEN, will you please aid me in making an airline reservation from ORD?

ASSISTANT: Sure, may I know your travel dates please?

USER: My travel dates are Mar 14th and Mar 16th.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connection limit.

ASSISTANT: May I know about your class preference?

USER: I am ok with any class.

ASSISTANT: Do you have any other preferences?

USER: The return time should be evening.

ASSISTANT: Sorry, no flights are running on your routes.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us, have a good day.