You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what assistance do you require from us?

USER: I am planning to attend my father retirement ceremony in Houston. Can you make a reservation for me?

ASSISTANT: Sure, I am happy to help you. Can you please tell me your travel airport codes?

USER: Sure, my origin code is PHL and the destination code is HOU.

ASSISTANT: Ok, when do you want to travel?

USER: Ok, my travelling dates are 07/05 to 07/07.

ASSISTANT: Ok, please wait a minute.

USER: Ok.

ASSISTANT: Sorry, there are no flights running in the dates you have provided.

USER: It's ok, no problem.

ASSISTANT: Can you please provide me your name for documentation purpose?

USER: My name is Rachel Johnson.

ASSISTANT: Ok, thank you for connecting us.

USER: Thank you for your information.

ASSISTANT: You are welcome.