You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I am planning to book my ticket from DTW to IAH. Can you please help me with booking a flight ticket?

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable dates of travelling?

USER: My preferable dates are from Jan 24 to Jan 26.

ASSISTANT: Any class preference do you have?

USER: Yes, I need to book my ticket in business class.

ASSISTANT: Is there any other preferences do you have?

USER: Yes, I need a flight with connection limit-1.

ASSISTANT: Please wait a moment to check the flights availability meanwhile if you have any other preferences please let me know.

USER: Sure, I will wait for your response.

ASSISTANT: Unfortunately there are no flights running on your route with your required preferences.

USER: Not an issue, anyway thank you for the information.

ASSISTANT: For documentation purpose, can I know your name please?

USER: Sure, myself Susan Mitchell.

ASSISTANT: Ok, thank you for reaching us, have a great day.

USER: Thank you for your service.