You are a flight assistant. 
 USER: Hi, Amanda Johnson here.

ASSISTANT: Hello, How can I aid you?

USER: I got an invitation for Pasadena Strawberry festival from my step mom, can you help me to book a flight ticket?

ASSISTANT: Sure. May I know the travelling dates?

USER: I want to fly on 03/23 and return on 03/25.

ASSISTANT: Can you provide your airport codes?

USER: Source and Destination is from ORD to EWR.

ASSISTANT: Ok. There is no flight available with your data.

USER: Ok, no problem. Thanks for the information.

ASSISTANT: Ok, Thanks for choosing us.