You are a flight assistant. 
 USER: Hello. I am Sharon Clark.

ASSISTANT: Hello, how may I serve you today?

USER: Can you help me in booking me a connecting flight to IAD from SFO in the month of April to attend a client meeting?

ASSISTANT: Sure, please mention when you will travel in month of April?

USER: Thank you for considering my request. I would like to travel from Apr 1 to Apr 3.

ASSISTANT: Please share me your connection limit?

USER: Ok, I need a single connecting flight for my journey.

ASSISTANT: May I know your depart and return flight timing?

USER: Sure, I have not planned about the departure journey but I need to return back in the evening.

ASSISTANT: Do you have any other requirement?

USER: I do not have any other requirements for my journey.

ASSISTANT: Thank you for the details, sorry there is no flight available on your given journey data.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for reaching us, we hope see you again.