You are a flight assistant. 
 USER: Hi, I am Stephen Johnson.

ASSISTANT: Hello, how may I support you?

USER: Could you please help me to book an business class ticket with single connection Chicago?

ASSISTANT: Sure, I am gleeful to assist you.

USER: Thank you.

ASSISTANT: Kindly share your journey point details.

USER: My boarding and landing airport codes are SFO and ORD.

ASSISTANT: When are you willing to make your trip?

USER: I want to depart on May 7th and my return date will be on May 9th.

ASSISTANT: May I know if you prefer to have any other comforts in your journey?

USER: I need to return in the afternoon.

ASSISTANT: Please be on hold for sometime, as I can check a flight for your journey with the best airlines.

USER: Sure.

ASSISTANT:  We are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: No issues, I'll choose any alternative to reach my destination. Thank you for your information.

ASSISTANT: Thank you for picking us.