You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me in reserving my flight from PHX to reach LAS?

ASSISTANT: Sure, can you please share me your travelling dates?

USER: Thank you, my travelling dates are Mar 12th and Mar 14th.

ASSISTANT: Do you have any connection limit?

USER: I prefer a flight which has maximum a single connection.

ASSISTANT: Is there any other specifications in your journey?

USER: I would like travel in economy class flight.

ASSISTANT: May I know your name?

USER: My name is Edward Thompson.

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

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us.