You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you please aid me to modify the ticket details? Because the planned trip got postponed due to some other important work.

ASSISTANT: Sure, We are here to help you.

USER: Thank you.

ASSISTANT: May I know your name?

USER: Sure, my name is Kathleen Allen.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: We found a reservation by this name. Can I know your travelling dates?

USER: Sure, I would like to move on Aug 19 and please book my return ticket on Aug 21.

ASSISTANT: Do you need any break?

USER: Yes, I need a break.

ASSISTANT: Please share me your airport codes.

USER: I want to travel from IAH to DEN.

ASSISTANT:  Is there any other requirements for this trip to met with, so that I can find a suitable flight for your journey?

USER: No, I don't have any other specifications.

ASSISTANT: We found a direct flight with an Hawaiian airlines,flight number :1024.

USER: I am ok with this flight, you can proceed with booking now.

ASSISTANT: Your flight ticket has been reserved with an economy class.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching us.