You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What type of service do you need from our agency?

USER: I am Eric Brown, want to travel from MSP to IAH. Can you please help me?

ASSISTANT: Yes, I am here to help you with the ticket booking. Do you have any preference about the number of connections?

USER: I want a single connection.

ASSISTANT: Ok, please provide me your planned trip dates.

USER: My trip dates are from 06/19 to 06/21.

ASSISTANT: Ok, may I know your airlines preference?

USER: No, thanks.

ASSISTANT: Ok, please give me a minute.

USER: Sure.

ASSISTANT: Sorry to inform you that, there is no flights available on the dates you have given.

USER: It's ok, thank you.

ASSISTANT: You are most welcome. Thank you for choosing us.