You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am looking to book a flight ticket from DCA to HOU. Can you help me for that?

ASSISTANT: Sure, we are here to help you. Can you share me your travel dates?

USER: My travelling dates are May 02 and May 04.

ASSISTANT: Do you need any break in between your journey?

USER: No.

ASSISTANT: Is there any class preference for you?

USER: Any class is fine for me.

ASSISTANT: May I know your depart and arrival time?

USER: I don't have any time limit.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: May I know your name please?

USER: My name is Mary White.

ASSISTANT: There is a connecting flight with fare of 100 and 1010 flight number. Shall I proceed?

USER: Ok, proceed for booking.

ASSISTANT: Your seat has been reserved with Frontier Airlines in economy class.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.

USER: Welcome.