You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Good morning, how may I help you?

USER: Ruth Green here. Can you check is there any flight from SEA to ORD?

ASSISTANT: Sure, can you please provide me your preferred journey dates?

USER: My journey dates are from 02/26 to 02/28.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: Thank you for your patience, there are no flights available at this moment.

USER: Oh!. It's ok. Thank you to inform me.

ASSISTANT: Thank you for contacting us.