You are a flight assistant. 
 USER: Hi, I am Joson Campbell.

ASSISTANT: Hello, how may I be there for you?

USER: I want to book a flight ticket from IAH to attend a robotic workshop at DEN, can you help me to book a flight ticket?

ASSISTANT: Sure, we are rapturous to help you.

USER: Thank you.

ASSISTANT: When are you willing to make your Journey?

USER: I intend to start on Jan 27th and my return date will be on Jan 29th.

ASSISTANT: Are you okay with connecting flight or you need a direct flight?

USER: I need a connecting flight.

ASSISTANT:  May I know if you prefer to have any other comforts in your journey?

USER: I want to depart and return in the afternoon.

ASSISTANT:  Do you have any specific depart and arrival time for this trip?

USER: I already mentioned above.

ASSISTANT: Ok. We are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: No issues, I'll choose any alternative to reach my destination. Thank you.

ASSISTANT: Thank you for choosing us.