You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I want to travel DEN from DFW, can you please help me with this?

ASSISTANT: Sure, may I know your name?

USER: I am Susan Turner.

ASSISTANT: Can I know your travelling dates?

USER: My journey dates are Sept 28 and Sept 30.

ASSISTANT: May I know your class preference?

USER: I am comfortable with any class.

ASSISTANT: Do you prefer any other preferences?

USER: I do not have any other preference.

ASSISTANT: There is a flight of frontier airline, flight number 1003 with the fare of 100.

USER: Proceed for booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.