You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I am Emma Allen. Can you help me to book a flight from SFO to OAK?

ASSISTANT: Sure, may I know your return travelling date?

USER: My journey dates are 03/11 and 03/13.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Give me a minute.

USER: Ok.

ASSISTANT: Sorry, there is no flight on your given dates.

USER: Ok, no issues. Thank you for your help.

ASSISTANT: Thank you for reaching us.