You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sarah Clark.

ASSISTANT: How can I assist you?

USER: I would like to travel from IAD to IAH. Can you please help me to book a ticket?

ASSISTANT: Sure, I will help you. May I know, when you have planned to depart and arrive?

USER: My travelling dates will be on Feb 20 to Feb 22.

ASSISTANT: Can I have your connection limit?

USER: I need a connecting flight.

ASSISTANT: Which class would you prefer for your journey?

USER: I am comfortable with any class.

ASSISTANT: Do you have any specific depart time and return time?

USER: I want to return in the afternoon.

ASSISTANT: Give me a minute, I will check and let you know the flight availability.

USER: Sure.

ASSISTANT: Thank you for your time. Jet Blue airline flight is available with fare 200 and single connection which will depart at 10:00 AM and return at 18:00 PM. Shall I confirm it?

USER: You can proceed to booking.

ASSISTANT: Your ticket has been confirmed in economy class with flight number 1015.

USER: Thank you.

ASSISTANT: Thank you for approaching us.