You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: Can you please book me a flight ticket to Orlando to celebrate party with my friends?

ASSISTANT: Sure, May I know the airport codes?

USER: My airport codes are from PHX to MCO.

ASSISTANT: Please help me with your travel dates.

USER: My travelling dates are starting on 01/28 and return on 01/30.

ASSISTANT: Can I get your name?

USER: Linda Campbell is my name.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, No flights found with your dates.

USER: Ok, no issues.

ASSISTANT: Thank you.

USER: Thanks for your service.