You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Melissa Thompson.

ASSISTANT: How may I guide you today?

USER: I want to travel from SEA to MCO. Can you book a flight ticket for me?

ASSISTANT: Can you please share your preferable journey dates?

USER: I want to travel in the flight on 11/22 and 11/24.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for reaching us.