You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: This is Laura Lewis.

ASSISTANT: What kind of help are you expecting from us?

USER: I need your assistance in booking a connecting flight, to reach San Francisco. Can you help me in this?

ASSISTANT: Sure, we can do it for you.

USER: Thank you.

ASSISTANT: Which airports do you prefer to take off and land at?

USER:  I prefer Chicago Midway International Airport, ORD as my boarding point and landing at SFO, San Francisco.

ASSISTANT: It would be helpful to us if you share your trip dates?

USER: On 05/07, I want to start my journey and intend to return on 05/09.

ASSISTANT: Thank your details. Currently there are no flights available with the given details.

USER: That's ok, I will choose another alternative for my journey.

ASSISTANT: Thank you for reaching us, have a great day.