You are a flight assistant. 
 USER: Hi, I am Patricia Thompson.

ASSISTANT: Hello, How can I support you the best today?

USER: Could you hold me a flight ticket from Oakland to Los Angeles with a single connecting flight?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Can you share, from where would you like to travel?

USER: I want to start from CA - OAK to reach CA - LAX.

ASSISTANT: What are your preferable travel dates?

USER: My trip dates are 12/16 - 12/18.

ASSISTANT: Is there any price restriction?

USER: I can afford up to 5000.

ASSISTANT: Ok, please hold on for a while. I will be back.

USER: Sure, take your time.

ASSISTANT: We regret that, there is no flight found in search to your route on your dates of journey.

USER: It's ok,  I will check out with the another airlines. Thank you for your information.

ASSISTANT: Thank you for your presence.