You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to attend for an interview in Washington, so please book a flight ticket from LGA to IAD.

ASSISTANT: Sure, please let me know your travelling dates.

USER: I will start on Jan 14, return on Jan 16.

ASSISTANT: Ok, Do you have any class preference?

USER: I want a business class flight ticket.

ASSISTANT: Ok, May I know your connection limit?

USER: I want a flight with one connection.

ASSISTANT: Ok, May I know your good name please?

USER: My name is Samantha Jones.

ASSISTANT: Ok, please wait for a while.

USER: Sure, my depart time should be evening, return time should be morning.

ASSISTANT: Ok. Thank you for waiting, There were no flights found with your given details.

USER: Not an issue, thank you.

ASSISTANT: Thank you for reaching us.