You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me in booking the ticket from IAH to LAX? As I have to host a program.

ASSISTANT: Do you have any airline preferences?

USER: Yes, I prefer normal-cost airlines.

ASSISTANT: Can you help me with your travel dates?

USER: Sure, my planned departure and return travel dates are 10th and 12th of Jan.

ASSISTANT: Do you need any connections?

USER: No, I don't have any other specifications more than that.

ASSISTANT: May I know your name please?

USER: Yes, my name is Brandon Allen.

ASSISTANT: Sorry to say that, there are no flights found with your details.

USER: That's ok, thank you for giving the information.

ASSISTANT: Thank you for reaching us.