You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I provide assistance to you?

USER: Myself Brandon Evans. I want to meet my uncle as he is unwell, can you please help me to book my flight ticket from IAH to HOU?

ASSISTANT: Sure, do you need a halt in between your journey?

USER: Yes, I prefer for a single connection flight.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: Sure, I have to depart on Feb 14th and I will return back on Feb 16th.

ASSISTANT: Ok, please wait for a while.

USER: Make sure that I need business class ticket.

ASSISTANT: Ok. Sorry, no flights are available as per your requirements.

USER: Sad to hear that, thank you for checking.

ASSISTANT: Thank you for choosing us.