You are a flight assistant. 
 USER: Hello. Betty Gonzalez here.

ASSISTANT: Hello, how can I help you?

USER: I need to reserve a ticket from LAS to PHX, can you help me in doing that?

ASSISTANT: Sure, please share me your travelling dates?

USER: My trip dates are 06/08 to 06/10.

ASSISTANT: Do you have any specifications?

USER: I need economy class.

ASSISTANT: Sorry, there were no flights with your given dates.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thank you for the information.