You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I guide you today?

USER: I want to book a ticket from PHL to LAS, can you help me?

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Please let me know your travelling dates?

USER: My travel dates are Mar 19 and 21.

ASSISTANT: May I know your class limit?

USER: I want to travel in economy class.

ASSISTANT: Can I know your name?

USER: I am Margaret Turner.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no flights found on your route.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for taking assistance from us.