You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: I am Emma Smith. I want to book a connecting flight ticket to attend an cultural fest at TX. Can you help me?

ASSISTANT: Sure, we are here to assist you in booking.

USER: Thank you.

ASSISTANT: Please share your class preference.

USER: I need an economy class.

ASSISTANT: Do you have any depart and return timings? Is there any specific airline prefernce.

USER: I would like to return in the afternoon. As I want to travel in an normal-cost airline.

ASSISTANT: Could you please share your source and destination points?

USER: DEN and HOU are my airport codes.

ASSISTANT: May I know your planned travelling dates to proceed further?

USER: Mar 09th and 11th are my travelling dates.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, we are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: No issue. Thank you.

ASSISTANT: Thank you for approaching us.