You are a flight assistant. 
 USER: Hello, I am Susan Jackson.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to give surprise to my friend on her birthday, can you please book a ticket on 10/16?

ASSISTANT: Sure, please help me with your travelling airport codes?

USER: Source New York, LGA and destination: Chicago, ORD.

ASSISTANT: Ok, let me know your return date please?

USER: Return is on 10/18.

ASSISTANT: Ok, any connection limit?

USER: I need connecting flight.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, no flights found with your given details.

USER: No problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you.