You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you help me to book a flight ticket from DFW to DEN?

ASSISTANT: Sure, we are euphoric to help you. When did you scheduled to travel?

USER: I planned my journey on the dates July 12 and July 14 respectively.

ASSISTANT: Do you prefer any whistle stop in your journey?

USER: I am looking for a connecting flight.

ASSISTANT: Is there any class preference for you?

USER: No, other preferences.

ASSISTANT: It will be helpful for me, If you share me your good name?

USER: Myself Lisa Rodriguez.

ASSISTANT: There is a connecting flight with fare of 200 and 1004 flight number. Shall I proceed?

USER: Please proceed.

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

USER: Thank you for your help.

ASSISTANT: Thank you for choosing our services.