You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I would like to travel from SFO to MCO as a holiday trip. Can you do the reservation?

ASSISTANT: Sure, tell me your travel dates please?

USER: My trip dates are 01/21 and 01/23.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Tell me your name please?

USER: Dennis Gonzalez here.

ASSISTANT: Thanks for waiting. But I am sorry to say that there are no flights available.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you.