You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I am Eric Harris here, I want to reserve my ticket from DCA to SFO, can you please help me in this intent?

ASSISTANT: Sure, can I have your trip dates?

USER: Sure, my preferable dates of journey is from 01/21 to 01/23. Please make sure that the price limit is 500.

ASSISTANT: Ok, please give me a minute.

USER: Sure, take your time.

ASSISTANT: I have found a flight with your requirements, the flight airlines is Hawaiian and the connection limit is 0. Is it ok for you?

USER: But, my connections limit is 1.

ASSISTANT: Sorry to inform you, there is no flight with connection limit 1 on the dates you have given.

USER: Ok, no problem. Thank you for your service.

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