You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Nancy Davis.

ASSISTANT: Ok.

USER: I am planning to visit my granny who is staying at Washington and spend time with her, can you avail me a direct flight?

ASSISTANT: Sure, I am here to assist you.

USER: Thank you.

ASSISTANT: May I know when you want to travel?

USER: I will fly from 07/08 and 07/10.

ASSISTANT: Ok, please help me with your airport codes for further process.

USER: My boarding point is SEA and destination point is IAD.

ASSISTANT: Wait a minute please.

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry to inform no flights found with your details.

USER: OK, no issues.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thank you.