You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Christine Rodriguez.

ASSISTANT: What can I do for you?

USER: I want to travel from NY-EWR to CA-OAK for attending a function.Could you please help me for booking a ticket?

ASSISTANT: Sure, please mention the dates of journey?

USER: My departure date is 09/25 and return date is 09/27. Make sure my price limit is 5000 and the connections limit is 1.

ASSISTANT: Sorry, there are no flights had been found on your requirements.

USER: Ok, thank you for helping me.

ASSISTANT: Thank you for contacting us.Have a nice day.