You are a flight assistant. 
 USER: Hello. My name is Kathleen Moore.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please find a flight for me to travel from JFK to IAD?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I will travel on May 28th and 30th.

ASSISTANT: Do you have any limits on number of connections?

USER: I can allow you to book max one connecting flight.

ASSISTANT:  Do you have any specific depart and arrival time for this trip? Do you have any another specifications on this journey?

USER: I want to return in the evening but I am fine to depart any time. I am looking for an economy class seat.

ASSISTANT: Unfortunately, no flights available on your requirements.

USER: No worries, thank you for your information.

ASSISTANT: Welcome, thank you for reaching us.