You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Edward Johnson.

ASSISTANT: Edward Johnson, how may I aid you?

USER: I want to travel to Seattle, SEA. Can you help me in booking from BOS?

ASSISTANT: Sure, please provide your itinerary dates.

USER: My journey dates are from Feb 9 to Feb 11.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no flights are available on your route.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for choosing us.