You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I support you today?

USER: Can you help me to book a flight from Washington?

ASSISTANT: Sure, we are gleeful to assist you. Please let me know if you need a connecting flight.

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

ASSISTANT: May I know your source and destination airport codes?

USER: My source is from IAD and destination is at ATL.

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

USER: My travel dates are Sept 12 and 14.

ASSISTANT: Is there any other preferences that you would like to add before booking?

USER: No.

ASSISTANT: Before check with the airlines, may I know your name please?

USER: Sure, Katherine Jones here.

ASSISTANT: Thank you for sharing your journey details, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, we are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: Ok, no issues. Thank you for helping me.

ASSISTANT: Thank you for approaching us.