You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Emily Lopez.

ASSISTANT: How can I assist you?

USER: I want to attend a live music event in Denver, where my favourite band will be performing. Can you book a ticket from OAK to DEN?

ASSISTANT: Sure. May I know the travelling dates?

USER: I want to depart on 01/11 and return by 01/13.

ASSISTANT: Do you have any specifications?

USER: My connection limit is 1. My budget for this trip is 1000.

ASSISTANT: Unfortunately, There is no flights found with your data.

USER: That's ok.

ASSISTANT: Thanks for  choosing us.

USER: I will find another way to reach there. Thank you for your help.