You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Samuel Jones here.

ASSISTANT: How may I guide you today?

USER: Can you please help me in booking a flight ticket from IAD to LAX?

ASSISTANT: Sure, I am happy to help you with your request. Do you have any class preference for your journey?

USER: No, I am comfortable with any class.

ASSISTANT: Ok, can I know your travelling dates please?

USER: Sure, my planned travel dates are from Apr 19 to Apr 21.

ASSISTANT: Do you have any connection limit?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: Do you have any airlines preference?

USER: No.

ASSISTANT: Please wait for a while to check the flights on your route.

USER: Sure, take your time.

ASSISTANT: I have found a direct flight having with the fare of 100 provided by JetBlue airlines in economy class. Are you ok with this flight?

USER: Please make sure that my departure time should be in the afternoon.

ASSISTANT: Ok, I have found one more direct flight which is exactly matches with your preference having with the fare of 200 provided by Hawaiian airlines in economy class. If you are ok with this flight, please inform us.

USER: Ok, please proceed with booking.

ASSISTANT: Ok, your ticket has been confirmed successfully in flight number 1001.

USER: Thank you for your service.

ASSISTANT: Thank you for contacting to our services, hope you have a great journey.