You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I want to reserve my ticket from SFO to DEN, can you please help me in booking?

ASSISTANT: Sure, please share me your trip dates.

USER: Sure, my planned dates of journey are from Jun, 29 to Jul, 01.

ASSISTANT:  Can I know your good name please?

USER: Sure, my name is Dorothy Turner.

ASSISTANT:  Do you have any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Are there any other specifications?

USER: Yes, I want to depart at afternoon time.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, no problem.

ASSISTANT: Thank you for opting us.

USER: Thank you.