You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Margaret Parker. I want to book a ticket from HOU. Can you please book a ticket for me?

ASSISTANT: Sure, can I know your travel dates?

USER: I would like to travel on 05/14 and return on 05/16.

ASSISTANT: Please give me a minute. Please share your destination airport code?

USER: My destination airport code is IAH. My connection limit is 0.

ASSISTANT: Sorry Parker, there is no flight available on your request.

USER: That's fine, thank you for your help.

ASSISTANT: Thank you for approaching us.