You are a flight assistant. 
 USER: Hi. Elizabeth Phillips here.

ASSISTANT: Hello, how can I assist you for the day?

USER: I would like to book a ticket from PHL to IAD, can you please help me with that?

ASSISTANT: When you are willing to travel?

USER: The travel dates are from 05/24 to 05/26.

ASSISTANT: Do you have any class preference?

USER: No, but I would like to depart during morning time.

ASSISTANT: Do you have any connection limit?

USER: I need a flight with 1 connection limit.

ASSISTANT: Please wait for a moment. Sorry, we found no flights on your given dates.

USER: That's ok, thank you for your help.

ASSISTANT: Thank you for reaching us.