You are a flight assistant. 
 USER: Hello, I am Margaret King.

ASSISTANT: Hello. How can I help you?

USER: I want to go to my grand mother memorial service at Oakland,CA-OAK.Can you please help me in booking?

ASSISTANT: Sure , we are here to help you. May I know your travelling dates?

USER: I want to fly on 03/17 and 03/19. The price should not exceed 200.

ASSISTANT: Please let me know your boarding point?

USER: My source is at Phoenix, AZ - PHX.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Please wait a while.

USER: OK.

ASSISTANT: Thanks for being waiting. Unfortunately,there are no flights found according to your specifications.

USER: Ok, no issues. Thanks for your help and support.

ASSISTANT: Thank you for consulting us.