You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I help you today?

USER: I have business meeting in San Francisco on July 9th, can you please book a ticket on July 8th?

ASSISTANT: Sure, we are here to assist you.

USER: Thank you.

ASSISTANT: Let me know your boarding and landing airport codes.

USER: Sure, DEN and SFO are boarding and landing airport codes.

ASSISTANT: DO you want connecting flight or direct flight?

USER: I need only connecting flight.

ASSISTANT: Ok, may I know your arrival date?

USER: July 10th is my arrival date.

ASSISTANT: Kindly, share your name.

USER: Kimberly Garcia is my name.

ASSISTANT: Thanks for sharing your details, currently no flights are running on your desired route.

USER: Ok, not a problem. Thanks for the information.

ASSISTANT: Thank you for reaching us.