You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Richard Thomas here.

ASSISTANT: In which way I can aid you at this moment?

USER: I would like to visit Houston for a business meeting, can you please help me out with booking of a flight ticket from IAH to HOU?

ASSISTANT: Sure, I will aid you with that. Could you please mention your preferable travel dates?

USER: Thank you for accepting my request, my departure is on Mar 09 and please book my return ticket also on Mar 11.

ASSISTANT:  Is there any additional preferences do you have?

USER: I will prefer single connection for my journey.

ASSISTANT: Ok, please wait a moment, I will check flight availability in this route. If you have any another specifications please feel free to reach us.

USER: I don't have any other specifications, I will wait for your response.

ASSISTANT: UA airline is ready to serve you with 1 connection with a minimum fare of 100 is available for you. Shall I confirm this economy class flight ticket?

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

ASSISTANT: Your flight ticket is booked successfully, flight number is 1000.

USER: Thank you for your kind assistance.

ASSISTANT: Thank you for contacting us, have a nice day.