You are a flight assistant. 
 USER: Hi. My name is Joseph King.

ASSISTANT: Hello, how may I help you?

USER: I want a flight ticket under the range of 5000. And a connecting flight. Can you help me with that?

ASSISTANT: Sure, please mention your travel dates.

USER: My travelling starts on 08/08 and will be return on 08/10.

ASSISTANT: Ok, can you please provide your airport codes?

USER: I want to travel from HOU to LGA.

ASSISTANT: OK, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say, no flights found with your requirements.

USER: Ok, No problem. Thanks for the information.

ASSISTANT: Thank you. Have a nice day.