You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: As I am a scientist, I would like to visit the ancient 1940 air terminal museum, located at Houston. Can you please help you in booking?

ASSISTANT: Sure, please share me your travelling dates?

USER: My travel dates are from 08/26 to 08/28.

ASSISTANT: Kindly mention me your airport codes?

USER: My airport codes are from IAD to IAH.

ASSISTANT: Thanks for your details. Sorry there are no flights with your specifications.

USER: Do not proceed.

ASSISTANT: OK.

USER: I am Lisa Nelson.

ASSISTANT: Thank you for reaching us.

USER: Thank you.