You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Help me in booking a flight from PHL to IAH?

ASSISTANT: Sure, may I know your name?

USER: I am David Thompson.

ASSISTANT: Can I know your journey dates?

USER: I like to travel on Apr 05 to 07.

ASSISTANT: Do you need a connecting flight?

USER: I prefer connecting flight.

ASSISTANT: May I know your other preferences?

USER: No.

ASSISTANT: There is a flight of American airline, flight number 1015 with the fare of 200.

USER: Proceed for booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.