You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, What kind of services are you excepting from us?

USER:  I would like to meet my sister at New York, can you please reserve flight ticket from IAD to LGA?

ASSISTANT: Sure, Can you please share your planned journey dates?

USER: Sure, my travelling dates are from Jul, 01 to Jul, 03.

ASSISTANT: May I know your connection limit?

USER: Sure, flight has to be with a single connection.

ASSISTANT: Let me know your class preference.

USER: I am comfortable with any class to travel.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait.

ASSISTANT: Sorry to inform you that, there were no flights found based on your scheduled dates.

USER: Ok, not an issue.

ASSISTANT: May I know your name for documentation?

USER: Sure, I am Sandra Clark here.

ASSISTANT: Thank you for choosing our service.

USER: Thank you for your information.