You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Please book a flight ticket from IAD to PHL.

ASSISTANT: Sure, kindly share your travel dates.

USER: My travelling dates are Oct 04 and Oct 06.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any other specification?

USER: I am looking for a normal cost airline.

ASSISTANT: Please share your name.

USER: Ok, my name is Angela Johnson.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to say, no flights found with your requirement.

USER: That's ok, thank you for the response.

ASSISTANT: Thanks for reaching us.