You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: My name is Joshua Baker, can you help me to book a flight ticket from IAD to LGA?

ASSISTANT: Sure, I am here to help you. Can you please share your travel dates?

USER: Ok, please can you book a flight ticket for the dates Mar 7th and 9th respectively.

ASSISTANT: Do you have any connection limit?

USER: Ok, please book a connecting flight.

ASSISTANT: May I know your airline preference?

USER: No airlines preference.

ASSISTANT: Which class do you prefer?

USER: Any class is ok for me.

ASSISTANT: May I know the departure and arrival time?

USER: Yes, I need a flight ticket which depart during afternoon timing and arrival timing is evening.

ASSISTANT: Ok, please be on hold.

USER: Ok, please take your own time.

ASSISTANT: Sorry, there are no flights in this route as per your travelling details.

USER: That is ok, thank you for assisting me.

ASSISTANT: Thank you for reaching us.