You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I need to reserve my flight ticket from SFO to ORD, can you please help me?

ASSISTANT: Sure, I am mirthful to help you. May I know your journey dates please?

USER: Ok, my travelling dare are 09/28 and 09/30.

ASSISTANT: Ok, please share your class preference.

USER: I need to prefer economy class with direct connection.

ASSISTANT: Is there any other concerns?

USER: No, thank you for asking.

ASSISTANT: Ok, please specify your name.

USER: Sure, my name is George Green here.

ASSISTANT: Thanks for your details, please wait.

USER: Sure.

ASSISTANT: Thank you for waiting, no flights were found based on your schedule.

USER: Ok, not an issue.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your information.

ASSISTANT: Have a nice day.