You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: My name is Karen Parker.

ASSISTANT: How may I assist you?

USER: I have to participate in ice-skating competition in Houston, can you please book me a ticket?

ASSISTANT: Sure, can I have your trip dates to go?

USER: Sure, my trip dates are 12/06 and 12/08.

ASSISTANT: Ok, please let me know your airports codes.

USER: Sure, my airport codes are EWR and IAH.

ASSISTANT: According to your information, there is no flight for you. Sorry for the inconvenience.

USER: That's ok, no problem. Thank you for your service.

ASSISTANT: It's ok, thanks for contacting us.