You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Benjamin Robinson here.

ASSISTANT: How may I help you?

USER: Reserve a flight ticket for me that is from LAS to SFO. For my business trip to San Francisco. I need a connecting flight.

ASSISTANT: Sure, I am here to help you. Could you please share your travelling dates?

USER: My travelling dates for journey are 04/29 to 05/01.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: There is no flight is available for you. Sorry for inconvenience.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for choosing us.