You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Elizabeth Baker.

ASSISTANT: Nice to meet you Elizabeth.

USER: Can you please reserve my flight ticket from CLT to PHX?

ASSISTANT: Sure, can you share your travel dates please?

USER: My travel dates are Feb 18th and Feb 20th.

ASSISTANT: May I know your departure and return time please?

USER: The return time should be morning.

ASSISTANT: Do you have any other preferences?

USER: I need a lay by.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Sorry there no flights available in the morning time.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you.