You are a flight assistant. 
 USER: Hello, Ryan Carter here.

ASSISTANT: Hello, how may I assist you today?

USER: As I need to attend a meeting on 01/13 which is held at Houston, TX-HOU and I would like to return on 01/15. Can you help me with the booking?

ASSISTANT: Sure, may I know your origin?

USER: My source point is Seattle, WA-SEA.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry to inform you that there are no flights found by the given specifications.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us. Have a nice day.