You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Pamela Thomas.

ASSISTANT: Thanks for providing your name.

USER: I want to book a flight ticket with a single connection. Will you help me in flight booking?

ASSISTANT: Sure, may I know your journey dates?

USER: My departure is 12/21 and my return date on 12/23.

ASSISTANT: Please provide me your airport codes?

USER: I am planning to do christmas shopping in TX - HOU and my origin from NV - LAS.

ASSISTANT: Is there any connection limit?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait a moment.

USER: My price limit is 5000.

ASSISTANT: Ok. There is no flight found on your journey details.

USER: Not an issue.

ASSISTANT: Thanks for approaching with us. Have a great day.

USER: Thanks for your service.