You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Joshua Miller.

ASSISTANT: How can I assist you?

USER: Can you help me searching flight with connection 1?

ASSISTANT: Ok, may I know your travelling dates?

USER: My travelling dates are 10/18 and 10/20.

ASSISTANT: Please mention your source and destination airport codes?

USER: My source and destination airport codes are SFO to IAH.

ASSISTANT: Sorry, no flights found on your dates.

USER: Oh! It's ok no problem, thank you for your services.

ASSISTANT: Thank you for reaching us.