You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Catherine Smith. I need a connecting flight in between my journey, can you help me in booking?

ASSISTANT: Sure, please provide your journey details.

USER: My travelling dates are 05/15 to 05/17.

ASSISTANT: Can you share your boarding and landing codes?

USER: I will fly from PHL and land at SEA.

ASSISTANT: Please hold on.

USER: Sure.

ASSISTANT: Thanks for being on hold. Sorry, there are no flights available on your travel dates.

USER: No problem , thank you for checking.

ASSISTANT: Thanks for choosing our service.