You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I am planning to attend music concert at EWR, can you please help me with booking a flight ticket from IAD?

ASSISTANT: Sure, please share me your trip dates.

USER: I would like to take off on Aug 5 and return on Aug 7.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: My name is Sharon Wilson.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I am looking for a connecting flight.

ASSISTANT: May I know your class preferences?

USER: I am comfortable with any class, but I prefer normal cost airline.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.