You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I want to book a connecting flight ticket to meet my grandparents at IL. Can you help me?

ASSISTANT: Sure, can you please share your journey dates?

USER: Thank you. Nov 25th and 27th are my travelling dates.

ASSISTANT: May I know your airport codes?

USER: HOU and ORD are my airport codes.

ASSISTANT: Let me know your class preference?

USER: I am comfortable with any class that which you provide.

ASSISTANT: Any other requirements to be met?

USER: No.

ASSISTANT: May I know your name?

USER: Raymond Allen here.

ASSISTANT: We found connecting flight 1021 in Southwest Airlines with fare of 100. Shall I proceed with economy class?

USER: You can reserve it.

ASSISTANT: Ok, your flight ticket has been booked.

USER: Thank you for your help in booking the flight ticket.

ASSISTANT: Thank you for reaching us.