You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Angela Lopez here.

ASSISTANT: How may I aid you today?

USER: I want to reserve my ticket from CLT to EWR, can you please help me?

ASSISTANT: Please mention your travelling dates Lopez.

USER: Sure, my planned dates of journey are from 08/20 to 08/22.

ASSISTANT: Please wait a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry Lopez, there are no flights available on your route.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Thank you for reaching our service.