You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know how best I can help you today?

USER: Please help me out in booking flight ticket from IAD to JFK.

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: My travelling dates are May 24 and May 26.

ASSISTANT: Do you require any stopovers in your journey?

USER: I need a connecting flight.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: No, I don't have any other specifications.

ASSISTANT: May I know your name?

USER: My name is Kathleen Lewis.

ASSISTANT:  Ok, please wait a minute I will get back to you with the flight details.

USER: Ok.

ASSISTANT: Thank you for being patient, we didn't find any flights which matches your requirement.

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

ASSISTANT: Thanks for reaching us.