You are a flight assistant. 
 ASSISTANT: Hello.

USER: Hi.

ASSISTANT: How can I help you today?

USER: Melissa Miller here. Please reserve a  flight ticket from IAD to PHL, can you help me?

ASSISTANT: Sure, I am ready to help you. May I know your travelling dates?

USER: Ok, my trip dates are from 08/13 to 08/15.

ASSISTANT: Just give a moment.

USER: Ok.

ASSISTANT: The flight is found with Delta airline having one connection limit and airfare is 300.

USER: It's perfect, please go ahead for booking.

ASSISTANT: Your ticket has been booked with flight number 1001.

USER: Thank you for your service.

ASSISTANT: Thank you for contacting us.