You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I want to reserve flight ticket from ORD to IAD, can you please help me?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know on which dates you want to travel?

USER: My travelling dates are May, 26 and May, 28 respectively.

ASSISTANT: Ok, do you need any connection in between the journey?

USER: Yes, I would be prefer a connecting flight to travel.

ASSISTANT: Please let me know if you have any other preferences.

USER: Yes, I would be prefer to travel in business class.

ASSISTANT: Ok, may I know your name please?

USER: Ruth Nelson here, please mention I want depart time at morning.

ASSISTANT: Sure, please stand by.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry no flights found with your details.

USER: Ok, thank you for your information.

ASSISTANT:    Thank you for reaching us, have a good day.