You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I be of your help?

USER: I want to go for a business trip to JFK, can you please avail me a flight ticket from IAD?

ASSISTANT: Sure, we are glad to serve you in booking.

USER: Thank you.

ASSISTANT: Do you have any class preference?

USER: I want an economy class.

ASSISTANT: Kindly share your planned travelling dates to proceed further.

USER: I want to start my journey on Apr 26th and return on Apr 28th.

ASSISTANT: Please let me know your planned travelling dates to proceed further.

USER: I have already mentioned above.

ASSISTANT: Do you need a break in between your journey?

USER: Yes, I need a break in between my journey.

ASSISTANT: Ok, please wait a moment.

USER: I want to depart in the evening.

ASSISTANT: May I know your name please?

USER: I am Katherine Hall.

ASSISTANT: Thank you for sharing your journey details, sorry to inform you that there are no flights found with your essential details.

USER: No issues, thank you.

ASSISTANT: Thank you for approaching us.